- Separated Platform and Compiler Dependent Behaviour into CMake scripts

- Implemented Basic Platform Interfaces
 - Implemented partial Linux platform and Wayland Display.
 - Implemented Dependencies for the above
   - map
     - set
       - optional
     - pair

TODO: threading

test/tests/lang/test_sequences.h

@@ -32,6 +32,8 @@ inline void test_sequences()
 	static_assert(fennec::is_same_v<make_index_sequence_t<2>, index_sequence<0, 1>>);
 	static_assert(fennec::is_same_v<make_index_sequence_t<3>, index_sequence<0, 1, 2>>);
 	static_assert(fennec::is_same_v<make_index_sequence_t<4>, index_sequence<0, 1, 2, 3>>);
+
+	// TODO
 }
 
 }