[Feature Request] Custom keybindings

[PROPHESSOR]

It would be more convenient if you allow users to change/create their own keybindings.

This can be done through the settings menu or using the config file.

Also, add the ability to create keybindings for menu options such as "Search for text", "Search for byte sequence", "Search for value", "Insert comment here", "Set Highlight" (for example, Ctrl+1, Ctrl+2, Ctrl+3, for different colors), "Set virtual address mapping", "Fill range", etc.

Also, please, add Ctrl+Enter binding to apply the comment in this menu, so the user don't need to use mouse for creating a comment.