Project Refactor; Content Loader; Launcher Requirements

Stella Framework now built as a static library: FindStella.cmake is provided for CMake buildsystems.
Major overhaul of project structure. Each project source is fully encapsulated by a parent folder.
[Stella]: Content Loader template class specializations now used for library loading mechanism.
[Stella]: First efficiency pass, thanks to Content Loader implementation.
[StellaLauncher]: Links against Stella library, and initializes / frees the Framework.