AXON-1209: Migration: npm → Yarn v4 (Berry)

[bhorai-atl]

What Is This Change?

Migrated the project from npm to Yarn v4 (Berry) for improved dependency management, better performance, and enhanced developer experience.

• Replaced package-lock.json with yarn.lock
• Added .yarnrc.yml configuration
• Set packageManager: "yarn@4.10.3" in package.json
• Configured nodeLinker: node-modules for VS Code extension compatibility
• Updated all npm commands to yarn equivalents (package.json, pre-commit hook, Dockerfile, GitHub actions workflows)

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How Has This Been Tested?

Basic checks:

• All unit tests passing
• Build compiles successfully without warnings
• Extension packaging works correctly

Recommendations:

• Update the CHANGELOG if making a user facing change

[sdzh-atlassian]

As a fellow yarn lover, I wholeheartedly welcome the change - but I would suggest that we not merge this for the next week, given the TEAM-related code freezes and the general caution advisory

[marcomura]

I'm not able to run the extension in debug mode with yarn:

Errors:

 *  Executing task: yarn run devcompile 

error This project's package.json defines "packageManager": "yarn@4.10.3". However the current global version of Yarn is 1.22.22.

Presence of the "packageManager" field indicates that the project is meant to be used with Corepack, a tool included by default with all official Node.js distributions starting from 16.9 and 14.19.
Corepack must currently be enabled by running corepack enable in your terminal. For more information, check out https://yarnpkg.com/corepack.

 *  The terminal process "/bin/zsh '-l', '-c', 'yarn run devcompile'" terminated with exit code: 1. 
 *  Terminal will be reused by tasks, press any key to close it. 

[bhorai-atl]

@marcomura Looks like you have Yarn 1.22.22 locally. Please enable Corepack and switch to Yarn 4.10.3 to run the "yarn run devcompile"

1. npm i -g corepack
2. corepack enable
3. corepack prepare yarn@4.10.3 --activate
4. yarn run devcompile

[bhorai-atl]

Hey @sdzh-atlassian, could you please take another look at this code?