toolchain: updated to v33 with debugging & other fixes
toolchain: better error handling during update/env configuration process
debugging: improved udev rules file, added readme on installation
firmware: bumped compiler C/C++ standards (stricter code checks)
firmware: fixed warnings emerging from newer standards
ufbt: FBT_NOENV is now also supported by ufbt
fbt: added ccache-related variables to env forward list on Windows
