Add railgun theme

Author: MrSubidubi

.gitmodules

@@ -2738,6 +2738,10 @@
 	path = extensions/racket
 	url = https://github.com/zed-extensions/racket.git
 
+[submodule "extensions/railgun"]
+	path = extensions/railgun
+	url = https://github.com/Al-Pharaday/zed-theme-railgun
+
 [submodule "extensions/railscast"]
 	path = extensions/railscast
 	url = https://github.com/pbsds/railscast-zed.git

extensions.toml

@@ -2777,6 +2777,10 @@ version = "0.2.5"
 submodule = "extensions/racket"
 version = "0.1.1"
 
+[railgun]
+submodule = "extensions/railgun"
+version = "1.0.0"
+
 [railscast]
 submodule = "extensions/railscast"
 version = "0.1.0"