gpui: Add Wayland support (#7664)

This PR adds Wayland support to gpui using
[wayland-rs](https://github.com/Smithay/wayland-rs). It is based on
[#7598](https://github.com/zed-industries/zed/pull/7598).

It detects Wayland support at runtime by checking the existence of the
`WAYLAND_DISPLAY` environment variable. If it does not exist or is
empty, the X11 backend will be used. To use the X11 backend in a Wayland
session (for development purposes), you just need to unset
WAYLAND_DISPLAY (`WAYLAND_DISPLAY= cargo run ...`).

At the moment it only creates the window and renders the initial content
provided by `BladeRenderer`, so it can run "Hello world" example.


![image](https://github.com/zed-industries/zed/assets/40907255/1655bc64-4d36-4178-9851-bfe42f03f716)

Todo:
- [x] Add basic Wayland support.
- [x] Add window resizing.
- [x] Add window closing.
- [x] Add window updating.
- [ ] Implement input handling, fractional scaling, and support other
Wayland protocols.
- [ ] Implement all unimplemented todo!(linux).
- [ ] Add window decorations or use custom decorations (like on MacOS).
- [ ] Address other missing functionality.

Release Notes:
- N/A

---------

Co-authored-by: gabydd <gabydinnerdavid@gmail.com>
Co-authored-by: Mikayla Maki <mikayla@zed.dev>

Cargo.lock

@@ -2489,6 +2489,12 @@ version = "0.15.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
 
+[[package]]
+name = "downcast-rs"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
+
 [[package]]
 name = "dwrote"
 version = "0.11.0"
@@ -3518,6 +3524,9 @@ dependencies = [
  "util",
  "uuid 1.4.1",
  "waker-fn",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
  "xcb",
 ]
 
@@ -5922,7 +5931,7 @@ dependencies = [
  "base64 0.21.4",
  "indexmap 1.9.3",
  "line-wrap",
- "quick-xml",
+ "quick-xml 0.30.0",
  "serde",
  "time",
 ]
@@ -6391,6 +6400,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "quick-xml"
+version = "0.31.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1004a344b30a54e2ee58d66a71b32d2db2feb0a31f9a2d302bf0536f15de2a33"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quick_action_bar"
 version = "0.1.0"
@@ -7245,6 +7263,12 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "scoped_threadpool"
 version = "0.1.9"
@@ -10320,6 +10344,66 @@ name = "wasmtime-wmemcheck"
 version = "16.0.0"
 source = "git+https://github.com/bytecodealliance/wasmtime?rev=v16.0.0#6613acd1e4817957a4a7745125ef063b43c273a7"
 
+[[package]]
+name = "wayland-backend"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d50fa61ce90d76474c87f5fc002828d81b32677340112b4ef08079a9d459a40"
+dependencies = [
+ "cc",
+ "downcast-rs",
+ "rustix 0.38.30",
+ "scoped-tls",
+ "smallvec",
+ "wayland-sys",
+]
+
+[[package]]
+name = "wayland-client"
+version = "0.31.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82fb96ee935c2cea6668ccb470fb7771f6215d1691746c2d896b447a00ad3f1f"
+dependencies = [
+ "bitflags 2.4.1",
+ "rustix 0.38.30",
+ "wayland-backend",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-protocols"
+version = "0.31.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f81f365b8b4a97f422ac0e8737c438024b5951734506b0e1d775c73030561f4"
+dependencies = [
+ "bitflags 2.4.1",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-scanner",
+]
+
+[[package]]
+name = "wayland-scanner"
+version = "0.31.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "63b3a62929287001986fb58c789dce9b67604a397c15c611ad9f747300b6c283"
+dependencies = [
+ "proc-macro2",
+ "quick-xml 0.31.0",
+ "quote",
+]
+
+[[package]]
+name = "wayland-sys"
+version = "0.31.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15a0c8eaff5216d07f226cb7a549159267f3467b289d9a2e52fd3ef5aae2b7af"
+dependencies = [
+ "dlib",
+ "log",
+ "pkg-config",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.64"
@@ -10753,7 +10837,7 @@ dependencies = [
  "as-raw-xcb-connection",
  "bitflags 1.3.2",
  "libc",
- "quick-xml",
+ "quick-xml 0.30.0",
 ]
 
 [[package]]