- Changed directory structure significantly, moving gfx api implementations to fennec/renderers

- Began new overarching window interface
 - Began outlining renderer interfaces
 - Began a binary tree implementation in bintree.h, this will act as a generalized binary tree, then red-black tree will be implemented on top of it for sequences (ordered sets)

cmake/sdl.cmake

@@ -18,4 +18,13 @@
 
 set(SDL_AUDIO OFF)
 set(SDL_RENDER OFF)
-add_subdirectory(external/SDL)
+add_subdirectory(${FENNEC_SOURCE_DIR}/external/SDL)
+
+fennec_add_sources(
+        include/fennec/platform/sdl/sdlwindow.h
+)
+
+fennec_add_shared_libraries(
+        SDL3::SDL3-shared
+)
+