feat: c509 wasm binding js

[bkioshn]

Description

Implement WASM binding JS for C509 lib

Related Issue(s)

Closes #617

Description of Changes

• Create a wrapper for wasm to be used in JS including
  • generate, verify, and decode function
  • string conversion to PrivateKey and PublicKey function
• Create a sample on how to use all the function mention above in Javascript and test it on a basic .html file
• Update Earthfile to generate the WASM package

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 105/105}$ | ${\color{red}Fail: 0/105}$ |

[dtscalac]

Had a look from a flutter web point of view. The created APIs can easily be called from dart via js_interop. Additionally with rather little effort we will be able to use the structures in Flutter that are returned by the wasm library. For flutter web this is a solid solution.

Looking a bit forward, wasm bindings are unusable on mobile/desktop platforms. Then I imagine we can rely on solutions like https://github.com/fzyzcjy/flutter_rust_bridge but from my experience it requires the rust code to be adapted to work with this bridge.

[Mr-Leshiy]

What do you think to transform your simple html/js example into the node tests and run them as integration tests in earthly.
Something similar we already done (but without earthly) by adding integration tests running wasm code (https://github.com/input-output-hk/catalyst-core/tree/main/src/chain-wallet-libs/bindings/wallet-wasm-js/js-test).
Of course it will take some additional effort to do that, but seems to me it worth to do.
Maybe not as a part of this PR.

[Mr-Leshiy]

LGTM