Support generating TypeScript/JavaScript clients using ccd-js-gen

[Bargsteen]

Purpose

Integrates our ccd-js-gen tool in our VS Code extension, so that js/ts clients can be generated from smart contract modules.
Closes #138.

As discussed in standup, I could not use ccd-js-gen as a library because it is an ES module, which VS Code does not support. ES modules are supported in Electron 28+ (electron/electron#37535), but VS Code is still on v25.

We tested the new commands on Windows, and the generator command did not work. After some debugging, we found out that it is because of a badly generated ps1/cmd file that is used as the executable.
Should be fixed by Concordium/concordium-node-sdk-js#315, but I have not tested the complete fix on Windows.

Changes

• Add commands:
  • To get the version of the ccd-js-gen executable
  • To generate js/ts clients from a wasm module
• Add a task for generating js/ts clients
• Add settings
  • Custom ccd-js-gen executable
  • Additional arguments for ccd-js-gen
• Refactorings
  • Move task types to a new file tasks.ts as they are needed for both ccd-js-gen and cargo concordium
  • Move helper functions for calling executables into the file executable-wrapper-helpers.ts

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.

[abizjak]

Looks good, but I do not understand how the ccd-gen-js is embedded as a binary.

Also, what runtime will the ccd-js-gen run with?

[Bargsteen]

Looks good, but I do not understand how the ccd-gen-js is embedded as a binary.

Also, what runtime will the ccd-js-gen run with?

The executable comes from adding the package to the project in package.json.
It is a simple script:

#!/usr/bin/env -S node --no-warnings
import { main } from '../lib/src/cli.js';
main();

which uses the node as runtime.
Good point about that, so we need to ensure or require that users have Node available.

[limemloh]

Looks good, with only some minor comments.