Blade window transparency (#10973)

Release Notes:

- N/A

Following up to #10880
TODO:
- [x] create window as transparent
  - [x] X11
  - [x] Wayland
  - [ ] Windows
  - [x] MacOS (when used with Blade)  
- [x] enable GPU surface transparency
- [x] adjust the pipeline blend modes
- [x] adjust shader outputs


![transparency2](https://github.com/zed-industries/zed/assets/107301/d554a41b-5d3f-4420-a857-c64c1747c2d5)

Blurred results from @jansol (on Wayland), who contributed to this work:


![zed-blur](https://github.com/zed-industries/zed/assets/107301/a6822171-2dcf-4109-be55-b75557c586de)

---------

Co-authored-by: Jan Solanti <jhs@psonet.com>

Cargo.lock

@@ -1480,7 +1480,7 @@ dependencies = [
 [[package]]
 name = "blade-graphics"
 version = "0.4.0"
-source = "git+https://github.com/kvark/blade?rev=e82eec97691c3acdb43494484be60d661edfebf3#e82eec97691c3acdb43494484be60d661edfebf3"
+source = "git+https://github.com/kvark/blade?rev=f5766863de9dcc092e90fdbbc5e0007a99e7f9bf#f5766863de9dcc092e90fdbbc5e0007a99e7f9bf"
 dependencies = [
  "ash",
  "ash-window",
@@ -1510,7 +1510,7 @@ dependencies = [
 [[package]]
 name = "blade-macros"
 version = "0.2.1"
-source = "git+https://github.com/kvark/blade?rev=e82eec97691c3acdb43494484be60d661edfebf3#e82eec97691c3acdb43494484be60d661edfebf3"
+source = "git+https://github.com/kvark/blade?rev=f5766863de9dcc092e90fdbbc5e0007a99e7f9bf#f5766863de9dcc092e90fdbbc5e0007a99e7f9bf"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4604,6 +4604,7 @@ dependencies = [
  "wayland-client",
  "wayland-cursor",
  "wayland-protocols",
+ "wayland-protocols-plasma",
  "windows 0.53.0",
  "x11rb",
  "xkbcommon",
@@ -11780,6 +11781,19 @@ dependencies = [
  "wayland-scanner",
 ]
 
+[[package]]
+name = "wayland-protocols-plasma"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23803551115ff9ea9bce586860c5c5a971e360825a0309264102a9495a5ff479"
+dependencies = [
+ "bitflags 2.4.2",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "wayland-scanner",
+]
+
 [[package]]
 name = "wayland-protocols-wlr"
 version = "0.2.0"