Prototype of visual mode, with hard coded values.

1. Search text (preferably the beginning of the text you'd like to yank)
2. Enter Visual Mode with 'v'
3. Modify the selection with basic VIM motions
4. Yank the text to clipboard with 'y' or exit Visual Mode

TODO:
-Modularize keys, so users can configure them
-Scroll window if selection goes out of viewport
-Enhance with more VIM-like functionality
-Automated tests