Adds a new method of installation detection for partners like Doppler.
Doppler creates edge function secrets with specific names
(`DOPPLER_CONFIG`, `DOPPLER_ENVIRONMENT`, and `DOPPLER_PROJECT`). This
method allows the dashboard to check for the presence of such a secret
to show the installation status.
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## Summary by CodeRabbit
* **New Features**
* Support for edge-function-secret-based OAuth identification and
verification.
* Installation checks adapt to the selected installation method and only
fetch required credentials when needed.
* Integration detection can validate installations via API key prefixes
or matching edge-function secret names.
* **Chores**
* Shared helper utilities and types exported to streamline installation
checks and mappings.
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[](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45826)
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Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
