remove Api/EMUOptions.cs -- this was included in EmuConfig.cs in r304

comitting current wip for cache support

when updating cached roms also make sure to reset the rom image

+ add support for:
  ** updating cached configs
  ** updating cached roms (including images)
  ** removing missing cached roms
  ** updating external configs

  ** NOTE: a platform that has external configs cannot have roms (or vice versa)
     A warning will be logged if this condition is not met

if a user aborts while cache is being generated, then that cache file should not be saved

+ add support to build cache for all platforms in a give path
+ add support to cancel the cache generation

update rom caching -- there is still a lot of work to do

ignore bin and obj folders

update code

update code

create project to hold EmuXPortal.Api files (this way they can be reused)