ProjectOptionValueError: display the config option description
It gives a bit more context of the problem for the user.
Example message with the description included:
`Error: Invalid value: 'invalid_debug_mode' is not one of 'always', 'modified', 'manual'. for option `debug_load_mode` (Allows one to control when PlatformIO should load debugging firmware to the end target) in section [env:nodemcu]`
Co-authored-by: Ivan Kravets <me@ikravets.com>
Ivan Kravets