Implement Node Class for Hierarchy file name List.
Implement Hierarchy file list for Gui Spawner, both creature and sounds, using "." as delimiter.
Commit: Add recursive sound search. Seperate sound type into "Sound" and "Streaming" directories.
Adding Sorting of Lists. Directories first, then alphabetical order.
Refactor Entity<Default> suffix into Entity<Declaration> suffix to better represent their functionality
Merge branch 'feature/betterSpawnerList' into dev
Merge branch 'refactor/entityDeclaration' into dev