Add some emacs editor packages

Adds:
goto-chg
rainbow-delimiters
yasnippet

Enables:
aggressive-indent in editor-mode-hook

home/emacs/modules/custom-ide-config.el

@@ -4,5 +4,9 @@
 (apheleia-global-mode +1)
 (direnv-mode +1)
 (eglot-ensure)
+(yas-reload-all)
+(add-hook 'prog-mode-hook #'aggressive-indent-mode)
+(add-hook 'prog-mode-hook #'rainbow-delimiters-mode)
+(add-hook 'prog-mode-hook #'yas-minor-mode)
 
 (provide 'custom-ide-config)

system/emacs.nix

@@ -35,11 +35,14 @@
           editorconfig
           aggressive-indent
           ibuffer-project
-          # custom
           treesit-grammars.with-all-grammars
           treesit-auto
           apheleia
           direnv
+          goto-chg
+          rainbow-delimiters
+          yasnippet
+          yasnippet-snippets
           nix-mode
           rust-mode