ci: add test workflow and fix code quality issues

- Add CI test job with Emacs batch load and byte-compile
- Fix settings-file variable check in init.el
- Fix extra parenthesis in init-neotree.el
- Add missing projectile dependencies in neotree and web-mode
- Fix add-hook usage in init-icons.el
- Add hydra dependency in init-ivy.el
- Standardize header style in init-company.el

modules/init-neotree.el

@@ -12,6 +12,7 @@
 
 (use-package neotree
   :ensure t
+  :after projectile
   :pin "MELPA"
   :commands (neotree-show
              neotree-hide
@@ -69,8 +70,7 @@
   (when (and (require 'neotree nil t)
              (fboundp 'neo-buffer--insert-root-entry)
              (fboundp 'shrink-root-entry))
-    (advice-add #'neo-buffer--insert-root-entry :override #'shrink-root-entry))
-  )
+    (advice-add #'neo-buffer--insert-root-entry :override #'shrink-root-entry)))
 
 (defun neotree-project-dir-toggle ()
   "Open NeoTree using the project root, using find-file-in-project or the current buffer directory."