refactor: cleanup project. ready for refactor.

- remove all old code
- build directory hierarchy, add basic cmake scripts.

cmake/custom_import_yycc.cmake

@@ -0,0 +1,10 @@
+
+# Check YYCC path variable
+if (NOT DEFINED YYCC_PATH)
+    message(FATAL_ERROR "You must set YYCC_PATH variable to one of CMake distribution of YYCC installation path.")
+endif()
+
+# Find YYCC library
+find_package(YYCCommonplace REQUIRED
+    HINTS ${YYCC_PATH} NO_DEFAULT_PATH
+)