Fix parameter serialization and deserialization

[rasmus-kirk]

Purpose

See #110

Changes

Breaking changes

• The following functions now parse using json-bigint meaning that they return bigints instead of numbers for all numbers no matter size
  • deserializeReceiveReturnValue
  • deserializeReceiveError
  • deserializeInitError
  • deserializeTypeValue

Added

• All JSON serialization in serialization.ts is now handled by json-bigint meaning that all functions now correctly handles bigint inputs

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.
• (If necessary) I have updated the CHANGELOG.

[soerenbf]

As this included breaking changes, we should merge this into release/10 instead.

[shjortConcordium]

LGTM (if Søren's comments are addressed 🙃)

[soerenbf]

LGTM