[Suggestion] Add controls to bottom of the screen

[ghost]

This editor feels a lot like Nano, which is a great editor. Nano has its controls constantly displayed on the bottom of the terminal, and I think it should be implemented in bte too.

[Sidd-Dino]

Sadly i'm putting off visual enhancements aside, until i fix up the text editing part. Damn tab characters cause a lot of pain. I'lll keep it in mind though ^u^