docs: update module usage instructions to remove Grunt and reflect dev-2.0 tooling #7871

[LalitNarayanYadav]

Changes:

• Removed outdated Grunt-based module bundling instructions from the main "Usage" section.
• Added updated instructions using npm run build for dev-2.0 and guidance on custom builds via Rollup.
• Moved legacy Grunt commands into a clearly labeled section with a deprecation warning.

Fixes #7871

PR Checklist

• npm run lint passes
• Inline reference is included / updated
• Unit tests are included / updated

[ksen0]

Hi @LalitNarayanYadav thanks for working on this! To link the PR to an issue, please write: "Fixes #7871" (if the issue should be closed when this PR is merged; otherwise, write "Addresses [issue]"). Thank you!

[LalitNarayanYadav]

Thanks you @ksen0 ! I'll keep it in mind.

[perminder-17]

These looks good so far, Really thanks for your awesome work. I'll give another round of review. I just need to ask weather you are confirm with these Spanish docs? I'll review them with translating with google translator and AI since I don't know spanish?

[perminder-17]

Yes, these commands look promising, and the npm run lint command appears to work correctly. Could you confirm whether changing the code’s indentation causes the linter to fail, or does it still pass? In my case, it always passes regardless of indentation.

[error-four-o-four]

The linter isn't implemented in v2+ yet. See #7853

In v1+ it wasn't configured for .md files. So my best bet is to not indent the code snippets.