enhancement(vrl): consolidate all VRL functions into vector-vrl-functions crate

[thomasqueirozb]

Summary

Creates a new vector-vrl-all crate that provides a single source of truth for all VRL functions used throughout Vector. All crates now use vector_vrl_all::all_vrl_functions() instead of manually assembling function lists, ensuring consistency and making Vector-specific VRL functions available in all contexts.

This also fixes a lot of examples from the website that were incorrect

Vector configuration

data_dir: /tmp/vector_test

sources:
  test_source:
    type: stdin
    decoding:
      codec: vrl
      vrl:
        source: |
          . = { "test": "data" }
          . = parse_dnstap!(.test)

sinks:
  test_sink:
    type: console
    inputs: [test_source]
    encoding:
      codec: json

How did you test this PR?

• Verified all crates compile successfully
• Tested vector vrl CLI to confirm enrichment and Vector-specific functions are now available
• Confirmed clippy enforcement works to prevent future direct usage of vrl::stdlib::all()

Change Type

• Bug fix
• New feature
• Non-functional (chore, refactoring, docs)
• Performance

Is this a breaking change?

• Yes
• No

Does this PR include user facing changes?

• Yes. Please add a changelog fragment based on our guidelines.
• No. A maintainer will apply the no-changelog label to this PR.

References

• Related: feat(vrl): add functions for internal vector metrics access in VRL #23430

[pront]

Note: set_semantic_meaning is not a secrets related function so secret_functions can be a bit misleading.