Add Odin extension (#539)

Extension for the Odin language with support for syntax highlighting
using `tree-sitter-grammars/tree-sitter-odin` and support for the odin
language server (at `DanielGavin/ols`).

---------

Signed-off-by: Christian Lee Seibold <christian.seibold32@outlook.com>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

.gitmodules

@@ -258,6 +258,10 @@
 	path = extensions/oceanic-next
 	url = https://github.com/rkunev/oceanic-next.git
 
+[submodule "extensions/odin"]
+	path = extensions/odin
+	url = https://github.com/clseibold/zed-odin
+
 [submodule "extensions/one-dark-pro"]
 	path = extensions/one-dark-pro
 	url = https://github.com/MordFustang21/zed-one-dark-pro.git

extensions.toml

@@ -323,6 +323,10 @@ version = "0.0.1"
 submodule = "extensions/oceanic-next"
 version = "0.1.0"
 
+[odin]
+submodule = "extensions/odin"
+version = "0.1.0"
+
 [one-dark-pro]
 submodule = "extensions/one-dark-pro"
 version = "0.0.3"