Control key support

[double-fault]

If you press the Control key with another key, it triggers a shorcut. Here is a list of shortcuts I plan to support:

• Control + A - go to the beginning of the line you are currently typing on.
• Control + E - go to the end of the line you are typing on.
• Control + L - clears the screen.
• Control + U - clears the line you are typing in.
• Control + H - backspace.
• Control + C - stops whatever you are running.
• Control + D - exits the shell instance.
• Control + N - opens a new shell instance.
• Control + W - deletes the word before the cursor.
• Control + T - swaps the last two characters before the cursor.