Add get_groth16_calldata to npm package

[luiz-lvj]

Adding get_groth16_calldata (in rust) to npm package

Pull Request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build-related changes
• Documentation content changes
• Testing
• Other (please describe):

What is the current behavior?

The npm package doesn't support the function get_groth16_calldata

Issue Number: #244

What is the new behavior?

• Funcion get_groth16_calldata from garaga_rs binded to wasm pkg and npm package
• Tests running on test-integration-suit

Does this introduce a breaking change?

• Yes
• No

Other information

[feltroidprime]

Looks good, but can we combine the parsing test on all the example json files available and just trying generating the calldata for them ?

We don't need to hardcode the inputs or expected output, simply a test that parses the proofs + vk and call the calldata generator without crashing will be enough to validate it is working.

Thank you