DYN-4617 : use biginteger from pythonnet directly

[BogdanZavu]

Purpose

No need to have our own decoder and encoder anymore for the BigInteger since pythonnet 3.1.0 has added support for this.
Operations with BigInteger works as before in a python script in Dynamo.

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

[twastvedt]

Makes sense to me. Should there be a test on Dynamo side, or are the tests we have already in PythonNet enough?

[pinzart90]

Are you planning to use the https://github.com/DynamoDS/Dynamo/tree/pythonnet_3.1.0 branch to implement all pythonnet3 changes ? Then take out the cpython project into a separate dynamo package ?

[pinzart90]

Just to give another heads up, some of the changes that I made to https://github.com/DynamoDS/Dynamo/tree/pythonnet_3.1.0 have not been properly validated/tested.

[BogdanZavu]

Makes sense to me. Should there be a test on Dynamo side, or are the tests we have already in PythonNet enough?

I don't think so, what we have on python side should do it.

[BogdanZavu]

Are you planning to use the https://github.com/DynamoDS/Dynamo/tree/pythonnet_3.1.0 branch to implement all pythonnet3 changes ?

I think so yes.

Then take out the cpython project into a separate dynamo package ?

Not sure but that sounds plausible, we have a task to decide on this.

[BogdanZavu]

Just to give another heads up, some of the changes that I made to https://github.com/DynamoDS/Dynamo/tree/pythonnet_3.1.0 have not been properly validated/tested.

We'll figure it out if something is not working but since you brought this up just to confirm : the changes related to pythonnet3.1 are your last 3 commits ?

[pinzart90]

Just to give another heads up, some of the changes that I made to https://github.com/DynamoDS/Dynamo/tree/pythonnet_3.1.0 have not been properly validated/tested.

We'll figure it out if something is not working but since you brought this up just to confirm : the changes related to pythonnet3.1 are your last 3 commits ?

Correct