feat(emacs): Setup some packages for emacs

Similar to a plugin manager, Emacs has Elpa and Melpa repos.  Here,
Melpa repository is being added and then some packages (themes and
languages' modes) provided by that repo.

emacs/init.el

@@ -15,3 +15,16 @@
 
 (add-hook 'prog-mode-hook #'display-line-numbers-mode)
 (when window-system (set-frame-size (selected-frame) 85 60))
+
+; After dealing with some nice defaults setup packages
+(require 'package)
+(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
+(package-initialize)
+
+(use-package vscode-dark-plus-theme
+  :ensure t
+  :config
+  (load-theme 'vscode-dark-plus t))
+
+(use-package rust-mode :ensure t)
+(use-package haskell-mode :ensure t)