Add the short url and organization feature

[ZPascal]

• Organization and url shorter feature implemented
• Organization and url shorter feature tested (unittests)
• Url shorter feature tested (integrationtest)
• Organization feature tested (integrationtest)
• All features are documented

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/grafana_api
__init__.py	0	0	0	0
alerting.py	281	0	116	0
alerting_notifications.py	92	0	38	0
api.py	45	0	24	0
dashboard.py	131	0	56	0
datasource.py	152	0	66	0
folder.py	111	0	52	0
legacy_alerting.py	54	0	26	0
model.py	83	0	20	0
organisation.py	151	0	64	0
search.py	14	0	6	0
short_url.py	16	0	6	0
tests/unittests
test_alerting.py	584	0	104	0
test_alerting_notifications.py	215	0	38	0
test_api.py	91	0	22	0
test_dashboard.py	322	0	54	0
test_datasource.py	358	0	64	0
test_folder.py	254	0	36	0
test_legacy_alerting.py	101	0	18	0
test_model.py	32	0	8	0
test_organisation.py	322	0	64	0
test_search.py	29	0	6	0
test_short_url.py	31	0	6	0
TOTAL	3469	0	894

Tests	Skipped	Failures	Errors	Time
313	0 💤	0 ❌	0 🔥	1.979s ⏱️