Add phoenix source files, start style conversion
Fix title screen

Note that settings does not work quite right yet
Port over some core gameplay files

A lot of this is untested, I haven't opened up the main loop yet
Uncomment "OTH" functions
Add and port more of lib
Port ebullets and drwspr
Fix player movement and screen, enable main loop
Launch castle/threadlist from F1 and F5 keys
Render scrolling sides
Add player weapons
Slow things down closer to the original
Render shield indicator
Render enemies and run AI
Add enemy bullet collision and death
Fix bugs with loading subsequent levels
FIx first boss level
Fix some bugs, introduce some new ones
Fix up to level 10
Re-enable shop psudeo-levels and add safer skip
Fix enemies with custom movmeent patterns