Extract Vue extension (#10486)

This PR extracts Vue support into an extension and removes the built-in
C# support from Zed.

Release Notes:

- Removed built-in support for Vue, in favor of making it available as
an extension. The Vue extension will be suggested for download when you
open a `.vue` file.

---------

Co-authored-by: Max <max@zed.dev>

extensions/terraform/extension.toml

@@ -10,6 +10,9 @@ repository = "https://github.com/zed-industries/zed"
 name = "Terraform Language Server"
 languages = ["Terraform", "Terraform Vars"]
 language_ids = { Terraform = "terraform", "Terraform Vars" = "terraform-vars" }
+# TODO: file issue for server supported code actions
+# TODO: reenable default actions / delete override
+code_action_kinds = []
 
 [grammars.hcl]
 repository = "https://github.com/MichaHoffmann/tree-sitter-hcl"