Add Lusch Theme (#1323)

#### A dark colorful theme for zed based off the colors used in
[Discord's UI](https://discord.com/branding)
### Preview
<img

src="https://github.com/user-attachments/assets/6f179683-1735-4d63-be26-cb025cf1bc0c"
width="546">
<img

src="https://github.com/user-attachments/assets/53ef2834-e04a-4576-bf3a-fb64c1e9b237"
width="546">

.gitmodules

@@ -526,6 +526,10 @@
 	path = extensions/luau
 	url = https://github.com/4teapo/zed-luau
 
+[submodule "extensions/lusch-theme"]
+	path = extensions/lusch-theme
+	url = https://github.com/biaqat/lusch-theme-zed.git
+
 [submodule "extensions/macos-classic"]
 	path = extensions/macos-classic
 	url = https://github.com/huacnlee/zed-theme-macos-classic.git

extensions.toml

@@ -597,6 +597,10 @@ version = "0.0.3"
 submodule = "extensions/luau"
 version = "0.1.3"
 
+[lusch-theme]
+submodule = "extensions/lusch-theme"
+version = "0.6.0"
+
 [macos-classic]
 submodule = "extensions/macos-classic"
 version = "0.1.0"