This is the first smaller PR in the broader change of updating our
Connect dialog (see
[here](https://github.com/supabase/supabase/pull/42276)).
This PR focuses on decoupling the ConnectButton our of the Connect
dialog and into its own component . The button includes a flag to render
the new sheet. The new sheet is empty for the time being as the flag is
at 0%.
To test:
- Enable flag and click button, see new Sheet
- Disable and see old dialog
- Create a new project -> in getting started section see "connect to
app" step -> Click connect button and make sure it works
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
- Added a Connect button component and an alternative Connect sheet.
- Added curl syntax highlighting for code blocks.
* **Changes**
- Connection dialog moved to a controlled open-state pattern; Connect
replaced legacy entry points across the UI and can be feature-flagged.
- Connection actions simplified and no longer depend on framework
selection.
* **Removals**
- Removed legacy framework selector, default framework constant, and
related tests.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
