emacs.d: initial config version

- starting init.el
  just basics (package, use-package, path-handlin)
- include my-site-start.el
  that includes site-start.d directory and imports
  all *.el files in lexical order
- functionality is imported via use-package inside
  the *.el file
  (first run: internet connection is needed to MELPA)

site-start.d/502-meson-mode.el

@@ -0,0 +1,13 @@
+;;; 500-meson-mode.el --- meson build system
+
+;;; Commentary:
+; GNU Emacs major mode to support meson build system
+
+;;; Code:
+
+(autoload 'meson-mode "meson-mode"
+  "Major mode for the Meson build system files" t)
+
+(add-hook 'meson-mode-hook 'company-mode)
+
+;;; 500-meson-mode.el ends here