Deprecate FID

[ankur22]

Feature Description

We need to deprecate FID web vital from k6 browser. It has been replaced by INP. More details can be found in https://web.dev/articles/fid.

Suggested Solution (optional)

We need to look at ways to make these clear to users. Can we explore and implement the following (where possible):

1. Deprecation warning in the summary of results;
2. Deprecation warning in the script itself with type defs;
3. Deprecation warning in docs.
4. Anywhere else in k6?

Already existing or connected issues / PRs (optional)

No response