feat(lang): Add nginx-mode and company-nginx packages

modules/languages/siren-nginx.el

@@ -0,0 +1,26 @@
+;;; siren-nginx.el --- jimeh's Emacs Siren: nginx-mode configuration.
+
+;;; Commentary:
+
+;; Basic configuration for nginx-mode.
+
+;;; Code:
+
+(use-package nginx-mode
+  :hook
+  (nginx-mode . siren-nginx-mode-setup)
+
+  :custom
+  (nginx-indent-level 4)
+  (nginx-indent-tabs-mode nil)
+
+  :init
+  (defun siren-nginx-mode-setup ()
+    (setq tab-width 4)))
+
+(use-package company-nginx
+  :hook
+  (nginx-mode . company-nginx-keywords))
+
+(provide 'siren-nginx)
+;;; siren-nginx.el ends here