fix(csharp): tree-sitter syntax highlight & indent

* modules/tools/tree-sitter/packages.el (tree-sitter-indent): added this
  package so other modules can opt into using it.

Close: #6829
Co-authored-by: dradetsky <dradetsky@users.noreply.github.com>

modules/lang/csharp/config.el

@@ -35,9 +35,6 @@
   (when (modulep! +lsp)
     (add-hook 'csharp-mode-local-vars-hook #'lsp! 'append))
 
-  (when (modulep! +tree-sitter)
-    (add-hook 'csharp-mode-local-vars-hook #'tree-sitter! 'append))
-
   (defadvice! +csharp-disable-clear-string-fences-a (fn &rest args)
     "This turns off `c-clear-string-fences' for `csharp-mode'. When
 on for `csharp-mode' font lock breaks after an interpolated string
@@ -47,6 +44,14 @@ or terminating simple string."
       (apply fn args))))
 
 
+(use-package! csharp-tree-sitter
+  :when (modulep! +tree-sitter)
+  :defer t
+  :init
+  (add-hook 'csharp-mode-local-vars-hook #'tree-sitter! 'append)
+  (add-to-list 'auto-mode-alist '("\\.cs\\'" . csharp-tree-sitter-mode)))
+
+
 ;; Unity shaders
 (use-package! shader-mode
   :when (modulep! +unity)

modules/tools/tree-sitter/packages.el

@@ -1,11 +1,9 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; tools/tree-sitter/packages.el
 
-(package! tree-sitter
+(package! tree-sitter :pin "c3fe96a103a766256ba62120eb638eef8e9a9802")
-  :pin "c3fe96a103a766256ba62120eb638eef8e9a9802")
+(package! tree-sitter-langs :pin "deb2d8674be8f777ace50e15c7c041aeddb1d0b2")
-
+(package! tree-sitter-indent :pin "4ef246db3e4ff99f672fe5e4b416c890f885c09e")
-(package! tree-sitter-langs
-  :pin "deb2d8674be8f777ace50e15c7c041aeddb1d0b2")
 
 (when (modulep! :editor evil +everywhere)
   (package! evil-textobj-tree-sitter