supabase / supabase / 22089274137

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feat: initial supamonitor changes (#42313)

Add a Query Performance page implementation powered by
[supamonitor](https://github.com/supabase/supamonitor).
[Context](https://linear.app/supabase/project/build-extension-for-supabase-query-insights-df4fb145352c/overview)

This looks largely the same as the pg_stat_monitor implementation:

<img width="2556" height="960" alt="Screenshot 2026-02-12 at 7 35 47 PM"
src="https://github.com/user-attachments/assets/bf37466e-f7af-41f2-b4f2-cf8eb6a8c76f"
/>

Only available on projects on custom AMI - existing users are unaffected

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Supamonitor-based query performance view: charts, aggregated metrics,
date-range controls, and export/download.
  * Added "Application" column for per-application tracking.
* Interactive Supamonitor grid: sorting, filtering, keyboard navigation,
selection, retry/error handling.
* Automatic per-project Supamonitor detection with toggleable UI
integration.

* **Bug Fixes**
* Chart latency calculation prefers histogram data for more accurate
p95.

* **Documentation**
  * Minor blog formatting fix.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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Co-authored-by: kemal <hello@kemal.earth>
Co-authored-by: Ali Waseem <waseema393@gmail.com>

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