Add Hotkeys for Moving Generators and Enemies

[TheJoeSmo]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. There is no way to move the blocks inside the editor with a keyboard only. This hinders usability and limits the user's options and experience possibilities.

Describe the solution you'd like A clear and concise description of what you want to happen. A series of hotkeys should be implemented to allow the player to cycle through each generator and move that generator around accordingly. This will require a hotkey to center the cursor on the critical dialogs, hotkeys to move up and down the list of generators or sprites, and another set of hotkeys to move a block around.

• To address to the first problem I recommend using ctrl + a sensible key with respect to its name and likeliness to be used.
• The second issue is already solved with most qt widgets.
• To move the blocks around, the combination of alt/shift should be used with the arrow keys. ctrl + a key could move the generator or enemy by 16 blocks. Alt + Pg/Home/End should bring it to its respective extremity.

Additional Information The hotkeys should eventually have an additional panel to customize the respective hotkeys.