Replace `objc` with `objc2` in other projects

[madsmtm]

As part of moving towards a (somewhat stable) version, I'd like to submit PRs to other projects to set an ecosystem-wide precedence for using this crate, and to see which patterns people are actually using that objc2 doesn't (or doesn't easily) help with.

Popular reverse-dependencies of objc on crates.io (as of the issue creation date):

• [ ] cocoa/cocoa-foundation: https://github.com/servo/core-foundation-rs/pull/628
• [x] winit: https://github.com/rust-windowing/winit/pull/2452
• [x] glutin: https://github.com/rust-windowing/glutin/pull/1461
• [x] ~core-video-sys~: https://github.com/LuoZijun/rust-core-video-sys/pull/23, but unmaintained
• [ ] metal: https://github.com/gfx-rs/metal-rs/pull/241
• [x] ~gfx backends~: unmaintained
• [ ] wgpu-hal: https://github.com/gfx-rs/wgpu/pull/5641
• [x] ~clipboard~: unmaintained
• [x] arboard: https://github.com/1Password/arboard/pull/148
• [x] copypasta: https://github.com/alacritty/copypasta/pull/74
• [x] webbrowser: https://github.com/amodm/webbrowser-rs/pull/87
• [ ] locale_config: https://github.com/rust-locale/locale_config/pull/11
• [x] rfd: https://github.com/PolyMeilex/rfd/pull/188
• [x] glfw: https://github.com/PistonDevelopers/glfw-rs/pull/566
• [ ] wry: https://github.com/tauri-apps/wry/issues/1239
• [ ] tao
• [x] ~offscreen_gl_context~: now surfman
• [x] trash: https://github.com/Byron/trash-rs/pull/107
• [ ] skia
• [ ] native-dialog: https://github.com/native-dialog-rs/native-dialog-rs/pull/58
• [x] window_clipboard: https://github.com/hecrj/window_clipboard/pull/27
• [x] vulkano: https://github.com/vulkano-rs/vulkano/pull/2561
• [ ] miniquad
• [ ] surfman
• [ ] display-link: Likely unmaintained
• [ ] druid-shell
• [x] dark-light: https://github.com/frewsxcv/rust-dark-light/pull/37
• [x] btleplug: https://github.com/deviceplug/btleplug/pull/381
• [ ] tts: Requires objc2-av-foundation, see https://github.com/madsmtm/objc2/issues/640
• [x] raw-window-metal: https://github.com/norse-rs/raw-window-metal/pull/15
• [x] ~msgbox~: archived

Others:

• [ ] pathfinder
• [ ] webrender
• [x] blurmac: Unmaintained
• [ ] alacritty: https://github.com/alacritty/alacritty/pull/8312
• [x] ruffle: Only used for Safari extension, and for dubious reasons, I'm not gonna touch it.
• [x] veloren: Needs native-dialog and wgpu to migrate
• [x] cacao: https://github.com/ryanmcgrath/cacao/issues/28
• [ ] bluster
• [ ] clipboard-files
• [ ] mac-notification-sys: https://github.com/h4llow3En/mac-notification-sys/pull/51
• [ ] slint (i-slint-renderer-skia)
• [ ] fruitbasket
• [x] glazier: Archived
• [ ] lapce
• [x] neovide: https://github.com/neovide/neovide/pull/2390
• [x] enigo: https://github.com/enigo-rs/enigo/pull/250
• [ ] nightlight
• [ ] current_locale
• [ ] zed
• [ ] screencapturekit
• [x] eframe: https://github.com/emilk/egui/pull/4395
• [x] softbuffer: https://github.com/rust-windowing/softbuffer/pull/210
• [x] gpu-allocator: https://github.com/Traverse-Research/gpu-allocator/pull/225
• [x] tray-icon: https://github.com/tauri-apps/tray-icon/pull/172
• [x] muda: https://github.com/tauri-apps/muda/pull/221
• [x] window-vibrancy: https://github.com/tauri-apps/window-vibrancy/pull/150
• [x] global-hotkey: https://github.com/tauri-apps/global-hotkey/pull/99
• [x] tauri: https://github.com/tauri-apps/tauri/pull/10924
• [ ] ash-window: https://github.com/ash-rs/ash/pull/939

[jinleili]

As soon as metal-rs merges the PR you replaced with objc2, I'm interested in completing the wgpu-hal part

[i509VCB]

Mentioning https://github.com/norse-rs/raw-window-metal since ash-window depends on it.

[pentamassiv]

I created an issue to replace it in enigo https://github.com/enigo-rs/enigo/issues/249

[paulora2405]

I created an issue to replace it in enigo enigo-rs/enigo#249

PR with the replacement of objc with icrate was merged in https://github.com/enigo-rs/enigo/pull/250.

[notgull]

https://github.com/rust-windowing/softbuffer/issues/181