Correctly parse List[X] annotated objects

[nielstron]

Imperatorlang allows users to specify PlutusData like this

@dataclass()
class D(PlutusData):
  xs: List[A]  # where A is also PlutusData

This was previously not correctly parsed by Pycardano. I suggest the List notation is also added to the main Pycardano, as it otherwise lacks the ability to build complex objects.

[codecov-commenter]

Codecov Report

Merging #170 (c4f801a) into main (985a2b6) will decrease coverage by 0.34%.
The diff coverage is 42.85%.

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@@            Coverage Diff             @@
##             main     #170      +/-   ##
==========================================
- Coverage   85.78%   85.45%   -0.34%     
==========================================
  Files          26       26              
  Lines        2814     2832      +18     
  Branches      672      679       +7     
==========================================
+ Hits         2414     2420       +6     
- Misses        296      302       +6     
- Partials      104      110       +6     

Impacted Files	Coverage Δ
pycardano/serialization.py	84.73% <40.00%> (-1.78%)	⬇️
pycardano/plutus.py	87.16% <45.45%> (-2.29%)	⬇️

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[cffls]

Thanks! The change makes sense. Could you add a test for it? LGTM otherwise.

[nielstron]

Future todos (for another PR)

• implement the same for Dict -> Add support for complex dictionary types #180
• fix the case where CBORTags are > 7 (this is covered by the plutus implementation but not widely documented)

[nielstron]

@cffls Please review

[nielstron]

Again, coverage submission failed :/