add glsl to treesitter

config/default.nix

@@ -20,7 +20,15 @@
       
       telescope.enable = true;
       
-      treesitter.enable = true;
+      treesitter = {
+          enable = true;
+          settings = {
+            highlight.enable = true;
+            grammarPackages = pkgs.vimPlugins.nvim-treesitter.passthru.allGrammars ++ [
+                pkgs.vimPlugins.nvim-treesitter-parsers.glsl
+            ];
+          };
+      };
 
       render-markdown.enable = true;