Linux window decorations (#13611)

This PR adds support for full client side decorations on X11 and Wayland

TODO:
- [x] Adjust GPUI APIs to expose CSD related information
- [x] Implement remaining CSD features (Resizing, window border, window
shadow)
- [x] Integrate with existing background appearance and window
transparency
- [x] Figure out how to check if the window is tiled on X11
- [x] Implement in Zed
- [x] Repeatedly maximizing and unmaximizing can panic
- [x] Resizing is strangely slow
- [x] X11 resizing and movement doesn't work for this:
https://discord.com/channels/869392257814519848/1204679850208657418/1256816908519604305
- [x] The top corner can clip with current styling
- [x] Pressing titlebar buttons doesn't work
- [x] Not showing maximize / unmaximize buttons
- [x] Noisy transparency logs / surface transparency problem
https://github.com/zed-industries/zed/pull/13611#issuecomment-2201685030
- [x] Strange offsets when dragging the project panel
https://github.com/zed-industries/zed/pull/13611#pullrequestreview-2154606261
- [x] Shadow inset with `_GTK_FRAME_EXTENTS` doesn't respect tiling on
X11 (observe by snapping an X11 window in any direction)

Release Notes:

- N/A

---------

Co-authored-by: conrad <conrad@zed.dev>
Co-authored-by: Owen Law <81528246+someone13574@users.noreply.github.com>
Co-authored-by: apricotbucket28 <71973804+apricotbucket28@users.noreply.github.com>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

crates/gpui/Cargo.toml

@@ -133,6 +133,7 @@ x11rb = { version = "0.13.0", features = [
     "xinput",
     "cursor",
     "resource_manager",
+    "sync",
 ] }
 xkbcommon = { version = "0.7", features = ["wayland", "x11"] }
 xim = { git = "https://github.com/npmania/xim-rs", rev = "27132caffc5b9bc9c432ca4afad184ab6e7c16af", features = [
@@ -160,6 +161,10 @@ path = "examples/image/image.rs"
 name = "set_menus"
 path = "examples/set_menus.rs"
 
+[[example]]
+name = "window_shadow"
+path = "examples/window_shadow.rs"
+
 [[example]]
 name = "input"
 path = "examples/input.rs"