Merge | DbConnectionOptions Prep Work

[benrr101]

Description: This one does some misc work before merging the netfx and netcore DbConnectionOptions partials into the existing DbConnectionOptions class. I could probably just merge it all together in one PR, but it feels like this should be its own PR.

• Rename DbConnectionOptions.Common to DbConnectionOptions
• Rename platform specific DbConnectionOptions partials to DbConnectionOptions.[netfx|netcore]
• Move DbConnectionOptions (and partials) to the ConnectionString namespace
• Separate debug code in DbConnectionOptions into its own partial
• Remove the KEY and SYNONYM internal static classes from the DbConnectionOptions and replace them with usages of DbConnectionKeywords and DbConnectionSynonyms

Testing: Everything still builds and should pass tests

[codecov]

Codecov Report

Attention: Patch coverage is 68.57143% with 11 lines in your changes missing coverage. Please review.

Project coverage is 64.46%. Comparing base (1eabf80) to head (62f2e4d).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...mmon/ConnectionString/DbConnectionOptions.Debug.cs	0.00%	8 Missing ⚠️
...ata/Common/ConnectionString/DbConnectionOptions.cs	90.47%	2 Missing ⚠️
...mmon/ConnectionString/DbConnectionOptions.netfx.cs	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3343      +/-   ##
==========================================
- Coverage   64.47%   64.46%   -0.02%     
==========================================
  Files         298      299       +1     
  Lines       65525    65525              
==========================================
- Hits        42248    42239       -9     
- Misses      23277    23286       +9     

Flag	Coverage Δ
addons	92.58% <ø> (ø)
netcore	68.54% <65.51%> (+0.03%)	⬆️
netfx	65.31% <68.57%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.