This switches how actions are registered in GPUI from
[dtolnay/linkme](https://github.com/dtolnay/linkme) to
[dtolany/inventory](https://github.com/dtolnay/inventory), fixing the
linking error seen in #15902, which also occurs on nightly toolchains.
I'm not sure if that issue should be closed or not given the other
problems on Chimera though.

This also fixes zed-industries/create-gpui-app#10

Release Notes:

- N/A