Add Antigravity IDE support

[snakecase]

Can be selected in Settings → General → Code → Code Editor:

Opens .cs files directly in Antigravity.

[Copilot]

Pull request overview

This PR adds support for the Antigravity IDE as a code editor option in the game's editor settings. The implementation follows the existing pattern established by other code editor integrations (VSCode, Rider, Visual Studio).

Changes:

• Adds new Antigravity code editor implementation that integrates with the editor's code editor selection system
• Implements the ICodeEditor interface with methods to open files, solutions, and addons
• Uses Windows Registry to detect Antigravity IDE installation

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[wpenistone]

there are a lot of IDEs that are just vscode forks, we can do this automatically and just have a list.
We can build a base and just add Antigravity on top of it, this would allow for easy addition of more IDEs (e.g. cursor, vsc insiders) in the future.

[DevulTj]

This isn't sustainable. We shouldn't be adding individual support for every single obscure IDE under the sun.

[wpenistone]

there are a lot of IDEs that are just vscode forks, we can do this automatically and just have a list. We can build a base and just add Antigravity on top of it, this would allow for easy addition of more IDEs (e.g. cursor, vsc insiders) in the future.

see #9995

[bub-bl]

there are a lot of IDEs that are just vscode forks, we can do this automatically and just have a list. We can build a base and just add Antigravity on top of it, this would allow for easy addition of more IDEs (e.g. cursor, vsc insiders) in the future.

see #9995

You can just create a lib for that. I already made one for Zed

[wpenistone]

there are a lot of IDEs that are just vscode forks, we can do this automatically and just have a list. We can build a base and just add Antigravity on top of it, this would allow for easy addition of more IDEs (e.g. cursor, vsc insiders) in the future.

see #9995

You can just create a lib for that. I already made one for Zed

Yes, but that's much less convenient for developers who just want it to work