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-company.el

@@ -1,8 +1,8 @@
 ;;; init-company.el --- .Emacs Configuration -*- lexical-binding: t -*-
 ;;; Commentary:
-;; Company es un famework de Emacs para el completado de texto.
+;; Company is a framework for text completion in Emacs.
 
-;;; code:
+;;; Code:
 (use-package company
   :defer 5
   :diminish
@@ -29,7 +29,6 @@
   (global-company-mode t))
 
 (use-package company-quickhelp
-  :ensure t
   :after company
   :config
   (company-quickhelp-mode 1))