refactor: update project

- add documentation CMake build script. re-organise document layout for future changes.
- move LIBCMO_EXPORT to BMap and rename it to BMAP_EXPORT because only BMap need to use this macro.
- fully refactor VTEncoding to make it more like Python
	- Now language name is platform independent.
	- Hide implementation detail as possible as I can.
	- Language mapping are still work in progress.
- add code gen for new added universal encoding feature to generate language name mapping in Windows and Iconv respectively.
- remove old code of CMake build script.
- update VTUtils for new requirement.
	- remove useless functions.
	- create LibCmo specific custom exception classes.

Unvirt/CMakeLists.txt

@@ -60,48 +60,3 @@ install(TARGETS Unvirt
     CONFIGURATIONS Release
     RUNTIME DESTINATION ${YYCC_INSTALL_BIN_PATH}
 )
-
-
-# cmake_minimum_required(VERSION 3.12)
-# project(Unvirt LANGUAGES CXX)
-
-# # add libcmo if not existed
-# if (NOT TARGET LibCmo)
-# 	add_subdirectory("../LibCmo" "LibCmo.out")
-# endif ()
-# # add ironpad if not existed
-# if (NOT TARGET IronPad)
-# 	add_subdirectory("../IronPad" "IronPad.out")
-# endif ()
-
-# # setup sources
-# set(unvirt_headers ".")
-# set(unvirt_sources
-# 	AccessibleValue.cpp
-# 	CmdHelper.cpp
-# 	StringHelper.cpp
-# 	StructFormatter.cpp
-# 	TerminalHelper.cpp
-# 	UnvirtContext.cpp
-# 	Unvirt.cpp
-# )
-
-# # generate program
-# add_executable(Unvirt ${unvirt_sources})
-# target_link_libraries(Unvirt
-# PRIVATE
-# 	LibCmo
-# 	IronPad
-# )
-# target_include_directories(Unvirt
-# PRIVATE
-# 	${unvirt_headers}
-# )
-
-# # set project standard
-# set_target_properties(Unvirt
-# PROPERTIES
-# 	CXX_STANDARD 20
-# 	CXX_STANDARD_REQUIRED 20
-# 	CXX_EXTENSION OFF
-# )