Mark TaKO8Ki as maintainer

[TaKO8Ki]

r? @davidtwco cc: @wesleywiser

This PR is a formal request to mark me as a compiler maintainer and compiler-fcp member.

I’m already on the compiler team, and this PR only updates my maintainer role/marker.
If any additional steps are required, please let me know and I’ll follow up.

Context:

• triagebot review queue PR has landed: Re-add TaKO8Ki to triagebot review queue rust#152222
• prior confirmation on Zulip from davidtwco

[rustbot]

Error: The feature assign is not enabled in this repository.
To enable it add its section in the triagebot.toml in the root of the repository.

Please file an issue on GitHub at triagebot if there's a problem with this bot, or reach out on #triagebot on Zulip.

[github-actions]

Dry-run check results

[WARN  sync_team] sync-team is running in dry mode, no changes will be applied.
[INFO  sync_team] synchronizing crates-io
[INFO  sync_team] synchronizing github
[INFO  sync_team] 💻 Repo Diffs:
    📝 Editing repo 'rust-lang/bors':
      Rulesets:
          Ruleset for main
            No changes

[jieyouxu]

(Note that in the current setup, there is also a compiler FCP subteam in case you want to be involved in reviewing FCPs.)

[TaKO8Ki]

Thanks for the note. I added myself to compiler-fcp as well.