include some missing source files

Dependencies

• [2] KKMFQDR4 editing source code from within the app

Change contents

• edit in source.lua at line 18
  [2.166103]

  [2.166103]
  + 'drawing',

  + 'help',
• edit in source.lua at line 25
  [2.166183]

  [2.166183]
  + 'geom',

  + 'drawing_tests',