Cw 4 + 5 add alerting and data source support

[ZPascal]

TODO

• Add Grafana V8 alerts support
• Update the documentation and doc strings
• Optimize the generated documentation
• Integrate an integration test for alerting

UPDATE: Unfortunately, I need a few more days to finish the PR and follow up with the integration testing.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/grafana_api
__init__.py	0	0	0	0
alerting.py	281	5	116	1
alerting_notifications.py	92	0	38	0
api.py	35	0	18	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	77	0	20	0
search.py	14	1	6	1
tests/unittests
test_alerting.py	584	0	104	0
test_alerting_notifications.py	215	0	38	0
test_api.py	99	0	18	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	25	0	8	0
test_search.py	29	0	6	0
TOTAL	2934	6	744

Tests	Skipped	Failures	Errors	Time
258	0 💤	0 ❌	0 🔥	2.232s ⏱️