@remotion/studio: Move install package menu

[JonnyBurger]

Fixes #7831.

Summary

• Moves the install package action from the top-level Packages menu into Tools.
• Updates the menu and quick switcher label to "Install package".

Testing

• bun test src/test/menu-typeahead.test.ts (from packages/studio)
• bunx turbo make --filter='@remotion/studio'
• bun run build
• bun run formatting

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Project	Deployment	Actions	Updated (UTC)
bugs	Ready	Preview, Comment	May 30, 2026 7:21am
remotion	Ready	Preview, Comment	May 30, 2026 7:21am

[pullfrog]

✅ No new issues found.

Reviewed changes — moves the install-package action from the standalone "Packages" top-level menu into the existing "Tools" menu, and relabels it from "Install..." to "Install package".

• Remove 'install' from MenuId union — cleans up the top-level menu type now that the standalone menu is gone.
• Inline install action into Tools menu block — keeps the same conditional visibility (readOnlyStudio || remotion_packageManager === 'unknown'), label update, and quick-switcher label change.
• Update quickSwitcherLabel to singular — matches the new menu label consistently.

  ^{｜ Fix it ➔ ｜ View workflow run ｜ Using Kimi K2 ｜ 𝕏}

[pullfrog]

✅ No new issues found.

Reviewed changes — moves the install-package action from the standalone "Packages" top-level menu into the existing "Tools" menu, and relabels it from "Install..." to "Install package".

• Remove 'install' from MenuId union — cleans up the top-level menu type now that the standalone menu is gone.
• Inline install action into Tools menu block — keeps the same conditional visibility (readOnlyStudio || remotion_packageManager === 'unknown'), label update, and quick-switcher label change.
• Update quickSwitcherLabel to singular — matches the new menu label consistently.

  ^{｜ Fix it ➔ ｜ View workflow run ｜ Using Kimi K2 ｜ 𝕏}