Create 19-count-resources.py

[ELN-uzun]

I actually made it run wit elabapi_python, which was not easy for me but in the end it worked out. I tested it in my testing team and with a productive used team on our instance

[NicolasCARPi]

Please remove all trailing whitespaces and whitespaces on lines (configure your editor to show them to you!)

Also, use the api_client like here:

elabapi-python/examples/001-manipulating-metadata.py

Lines 10 to 11 in 3bb9c1c

	# use the locally defined client.py module to get the api_client object, fully configured and ready to be used to instantiate api objects
	from client import api_client

this way we avoid repeating all the configuration code (and the warning suppressing code is there already). It makes the example simpler to read, skipping the boilerplate.

[NicolasCARPi]

Merged in #29 (there was still whitespaces to remove)

Thanks!