Fix plutus script deserialization

[theeldermillenial]

When either a PlutusV1Script or a PlutusV2Script is added as a script input and serialized to cbor, any attempt to deserialize throws a deserialization error. This is because there is no explicit catch in _restore_typed_primitive for bytes data to parse into the appropriate data type except for ByteString.

This PR takes a conservative approach to resolving this issue, by only looking for classes named PlutusVxScript with a bytes values and casts them to the appropriate script type.

A more general approach would be to detect if the parsing object is a class and the value is bytes and using the abstracted parsing object to wrap the bytes object, and do this for all bytes values. However, that was not implemented here because it wasn't clear if this could have bad side effects.

I was able to develop a minimal test example that failed before the fix and passed after the fix was implemented.

fixes #251

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (d1ec439) 84.63% compared to head (4d94b3b) 84.61%.

Files	Patch %	Lines
pycardano/serialization.py	50.00%	1 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #293      +/-   ##
==========================================
- Coverage   84.63%   84.61%   -0.02%     
==========================================
  Files          26       26              
  Lines        3071     3075       +4     
  Branches      752      754       +2     
==========================================
+ Hits         2599     2602       +3     
- Misses        353      354       +1     
  Partials      119      119              

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[nielstron]

Looks good to me! Thank you for this fix!