docs: update component ownership guidelines and templates

[pichlermarc]

Which problem is this PR solving?

• Updates the instrumentation request template to include the ownership requirements checklist (makes the process a bit clearer)
• Adds documentation that we give triage permissions to component owners (refs Add component owners to js-contrib-triagers role #2600)
• Adds a recommendation that component owners apply the has:owner-approval label upon approval to signal to maintainers that the PR is ready to merge (reducing time to merge and cutting down on pings for maintainers)
• Clarifies that a separate repo close to the org that maintains the instrumented package is a feasible location for hosting a instrumentation package (reduces time needed to explain this)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.79%. Comparing base (6b4e532) to head (7a27fc5).

Additional details and impacted files

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  Coverage   90.79%   90.79%           
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  Files         169      169           
  Lines        8061     8061           
  Branches     1646     1646           
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  Hits         7319     7319           
  Misses        742      742