feat: add Tags support to Http Api

[keetonian]

Issue #, if available:
N/A
Description of changes:
Add tags support to Serverless::HttpApi resources
Description of how you validated changes:
Deployed templates to CFN to verify tags work, show up in console.
Checklist:

• Write/update tests
• make pr passes
• Update documentation
• Verify transformed template deploys and application functions as expected
• Add/update example to examples/2016-10-31

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[keetonian]

Tests to write:

• Overwriting tags existing in OpenApi document
• Test to hit new error case for invalid OpenApi when using Tags

I may also need to verify that tags in the OpenApi document is a list before I assume it is one.

[alexw91]

Codecov Report

Merging #1459 into develop will decrease coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1459      +/-   ##
===========================================
- Coverage    94.36%   94.30%   -0.06%     
===========================================
  Files           78       78              
  Lines         4685     4709      +24     
  Branches       937      944       +7     
===========================================
+ Hits          4421     4441      +20     
- Misses         121      123       +2     
- Partials       143      145       +2     

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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (develop@b430500). Click here to learn what that means.
The diff coverage is 72.72%.

@@            Coverage Diff            @@
##             develop   #1459   +/-   ##
=========================================
  Coverage           ?   94.3%           
=========================================
  Files              ?      78           
  Lines              ?    4709           
  Branches           ?     944           
=========================================
  Hits               ?    4441           
  Misses             ?     123           
  Partials           ?     145

Impacted Files	Coverage Δ
samtranslator/model/eventsources/push.py	90.75% <100%> (ø)
samtranslator/model/api/http_api_generator.py	94.95% <50%> (ø)
samtranslator/open_api/open_api.py	93.87% <80%> (ø)

---

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[alexw91]

Codecov Report

Merging #1459 into develop will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1459      +/-   ##
===========================================
+ Coverage    94.36%   94.39%   +0.02%     
===========================================
  Files           78       78              
  Lines         4685     4709      +24     
  Branches       937      944       +7     
===========================================
+ Hits          4421     4445      +24     
  Misses         121      121              
  Partials       143      143              

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (develop@b430500). Click here to learn what that means.
The diff coverage is 90.9%.

@@            Coverage Diff             @@
##             develop    #1459   +/-   ##
==========================================
  Coverage           ?   94.39%           
==========================================
  Files              ?       78           
  Lines              ?     4709           
  Branches           ?      944           
==========================================
  Hits               ?     4445           
  Misses             ?      121           
  Partials           ?      143

Impacted Files	Coverage Δ
samtranslator/model/eventsources/push.py	90.75% <100%> (ø)
samtranslator/model/api/http_api_generator.py	98.31% <100%> (ø)
samtranslator/open_api/open_api.py	93.87% <80%> (ø)

---

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Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[alexw91]

Codecov Report

Merging #1459 into develop will decrease coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1459      +/-   ##
===========================================
- Coverage    94.36%   94.32%   -0.04%     
===========================================
  Files           78       78              
  Lines         4685     4655      -30     
  Branches       937      944       +7     
===========================================
- Hits          4421     4391      -30     
  Misses         121      121              
  Partials       143      143              

Impacted Files	Coverage Δ
samtranslator/plugins/exceptions.py	83.33% <0.00%> (-2.39%)	⬇️
samtranslator/model/iam.py	92.85% <0.00%> (-1.43%)	⬇️
samtranslator/translator/arn_generator.py	86.95% <0.00%> (-0.55%)	⬇️
samtranslator/model/sqs.py	93.33% <0.00%> (-0.42%)	⬇️
samtranslator/validator/validator.py	95.23% <0.00%> (-0.42%)	⬇️
samtranslator/open_api/open_api.py	93.61% <0.00%> (+0.10%)	⬆️
samtranslator/swagger/swagger.py	92.30% <0.00%> (-0.14%)	⬇️
samtranslator/model/__init__.py	98.11% <0.00%> (-0.04%)	⬇️
samtranslator/plugins/globals/globals.py	99.02% <0.00%> (-0.03%)	⬇️
samtranslator/model/sam_resources.py	94.05% <0.00%> (-0.02%)	⬇️
... and 8 more

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[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (develop@b430500). Click here to learn what that means.
The diff coverage is 90.9%.

@@            Coverage Diff             @@
##             develop    #1459   +/-   ##
==========================================
  Coverage           ?   94.39%           
==========================================
  Files              ?       78           
  Lines              ?     4709           
  Branches           ?      944           
==========================================
  Hits               ?     4445           
  Misses             ?      121           
  Partials           ?      143

Impacted Files	Coverage Δ
samtranslator/model/eventsources/push.py	90.75% <100%> (ø)
samtranslator/model/api/http_api_generator.py	98.31% <100%> (ø)
samtranslator/open_api/open_api.py	93.87% <80%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b430500...4eeb285. Read the comment docs.

[ShreyaGangishetty]

Looks good to me!