-added header and source generation mode;

-changed command line interface;
-set version to 2.0.0;

-added a custom name for generated raw string literal

-added CMake helper functions located in hypertextcpp.cmake;

-added unnamed namespace usage to shared lib renderer;
-cleaned up codebase;
-updated readme;
-set version to v1.2.0;

-updated seal_lake to v0.2.0

-added CMakePresets.json