File reorganize

[trigger-segfault]

• Source files have been reorganized into subfolders so that everything is not in the root folder of Classes or Forms.
• Classes/ root folder has been renamed to Common/.
• Added Resources/ root folder with 16px pngs and ico files for the four PlayStation controller buttons.
• Renamed a handful of files to follow conventions, more closely match what it does, or simplify the name where the more complex name wans't needed.
• Deleted BigEndianReader.cs, as it wasn't even included in the project files (and has been replaced by BinaryReaderExtensions).
• Deleted FileReader.cs, as it doesn't have any use.
• Deleted OpenTK.dll.config, because it already exists under packages/.
• Cleaned up some unused namespace using statements. And reorganized some usings so that System would always come first.
• Renamed unused references: System.Data, System.Data.DataSetExtensions, and System.Xml.Linq.

Renamed files:

• Renamed all format Parsers to use all caps for the format name, and always use Parser as the postfix in their name.
• Renamed all format Exporters to use all caps in the format name.
• Renamed CoordUnit to Coordinate.
• Renamed GeomUtils to GeomMath (to justify keeping it in the root Common/ folder, because it's so commonly used)
• Renamed VRAMPages to just VRAM.
• Renamed LauncherForm to ScannerForm.
• Renamed DialogForm to InputDialog.
• Renamed SelectTMDForm to SelectRootEntityDialog.
• Renamed Utils to StringUtils.

New subfolder structure:

• Common/ - commonly used types that don't depend on anything in Common subfolders.
  • Animator/ - all animation classes
  • Exporters/ - exporter and helper classes
  • Parsers/ - parser and helper classes
  • Renderer/ - renderer classes (excluding RenderInfo and Texture)
  • Utils/ - utility and extension classes (excluding GeomUtils)
• Forms/ - standalone forms that aren't used as dialogs
  • Controls/ - custom forms controls and editor classes
  • Dialogs/ - dialog forms only intended to be shown over another form (excludes TMDBindingsForm, since it uses Show)
  • Utils/ - property descriptors and extension classes