lots of bug fixes! Thanks erfg12!

• Fixed attack/pickup/open actions
• Fixed left/right/up/down movements
• Fixed inventory and hotspell snap grid
• Fixed towner chat
• Plus opens menu, Minus opens automap
• Changed readme to show Windows and MacOS compilation instructions
• D-pad emulates joystick
• Automap moves with right joystick when open
• Controller buttons now closely mimic PS1 controller setup (please don't let ppl change this again)
• Added lots of SWITCH definitions to hopefully get it closer to merging with master code