Add ERB snippets extension (zed-industries#3463)

Adds comprehensive ERB snippets extension with 50+ snippets covering all
HTML5 elements.

---------

Co-authored-by: Marshall Bowers <[email protected]>

Author: 2 people

.gitmodules

@@ -750,6 +750,10 @@
 	path = extensions/env
 	url = https://github.com/zarifpour/zed-env
 
+[submodule "extensions/erb-snippets"]
+	path = extensions/erb-snippets
+	url = https://github.com/enderahmetyurt/zed-erb-snippets
+
 [submodule "extensions/erlang"]
 	path = extensions/erlang
 	url = https://github.com/zed-extensions/erlang.git

extensions.toml

@@ -758,6 +758,10 @@ version = "0.0.8"
 submodule = "extensions/env"
 version = "0.0.1"
 
+[erb-snippets]
+submodule = "extensions/erb-snippets"
+version = "0.1.0"
+
 [erlang]
 submodule = "extensions/erlang"
 version = "0.1.2"