[dotnet] [bidi] Add remaining PrimitiveProtocolValues, simplify conversation for primitives.

[RenderMichael]

Description

• Add remaining PrimitiveProtocolValue
  • RemoteValue.BigInt
  • LocalValue.BigInt
  • LocalValue.Boolean
• Add a number of helpers to convert between .NET types and BiDi types

Motivation and Context

We were missing some PrimitiveProtocolValues: BigInt and Boolean on the local side, and BigInt on the remote side.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes. // Will update after similar PR gets merged
• All new and existing tests passed.

[nvborisenko]

So many conceptual stuff here to be analyzed.

[RenderMichael]

Still WIP 😄

[nvborisenko]

As in related PR #15395 I propose to gather json payloads to see how it is implemented by vendors to choose the best way how to handle it.