docs(js): add JSDoc comments

[nhs04047]

Hi!

I noticed that the Node.js SDK lacks documentation compared to other SDKs like Java and
Go, which have proper doc comments. So I'd like to start adding JSDoc comments to
improve the developer experience.

This is the first PR in a series - I'm planning to gradually add JSDoc documentation
across the entire Node.js SDK.

Changes

• Add JSDoc to wire utility functions (number.utils.ts, identifier.utils.ts,
  serialize.utils.ts, uuid.utils.ts, command.utils.ts, type.utils.ts)
• Fix typo: "Unsuported" → "Unsupported"

Test plan

• Lint and existing tests pass
• No breaking changes (documentation only)

[spetz]

@nhs04047 thank you! Would you also consider adding the docs to https://github.com/apache/iggy-website/ which is then published to https://iggy.apache.org/docs/ so that there would be SDK -> Node section with some hints, tutorial etc.?

[spetz]

Also, let's try to pack as much updates as possible into the single PR, since it's not a logic that would potentially break some stuff etc.

[nhs04047]

@nhs04047 thank you! Would you also consider adding the docs to https://github.com/apache/iggy-website/ which is then published to https://iggy.apache.org/docs/ so that there would be SDK -> Node section with some hints, tutorial etc.?

Thanks for the suggestion! Contributing to the website docs sounds like a great opportunity for me.
Let me first complete the JSDoc work on the SDK, and once I get more familiar with the project, I'd be happy to add a Node.js SDK section with tutorials and examples to the website.

[nhs04047]

Also, let's try to pack as much updates as possible into the single PR, since it's not a logic that would potentially break some stuff etc.

Got it, thanks!

[nhs04047]

i've completed the JSDoc documentation for all modules
also fixed all lint errors (type imports, unused imports, primitive type casing)

[spetz]

@nhs04047 thanks, please check the failing CI, and fix whitespaces + commit title (use js).

[nhs04047]

@spetz all fixed!

[spetz]

@nhs04047 please run ./scripts/ci/trailing-whitespace.sh --fix to fix the whitespace issues.

[nhs04047]

@spetz Done, fixed and pushed.