CMake

• Now fully supports FetchPackage for dependency resolution. #141
• No longer sets output directories.
• Now only configures Vcpkg or CPack when LIBTCOD_VCPKG or LIBTCOD_CPACK is enabled.
• LIBTCOD_UTF8PROC now defaults to ON instead of vcpkg.
• Library dependency options now use ON/OFF values instead of find_package/disable.
• CMAKE_DISABLE_FIND_PACKAGE_X no longer disables dependencies automatically.
• Added LIBTCOD_DOCS to build and install HTML documentation.

Fixed

• Mouse coordinate to tile conversions now support SDL renderer logical size and scaling.
• Fixed out-of-bounds memory access in TCODList::reverse and TCODList copy methods.