[discourse-gatekeeper] Migrate charm docs

[github-actions]

This pull request was autogenerated by discourse-gatekeeper to migrate existing documentation from server to the git repository.

[github-actions]

Test coverage for 8fa019b

Name                            Stmts   Miss Branch BrPart  Cover   Missing
---------------------------------------------------------------------------
src/actions/__init__.py             3      0      0      0   100%
src/actions/register_user.py       22      0      2      0   100%
src/actions/reset_instance.py      21      0      2      0   100%
src/charm.py                      218      8     50      4    96%   156-157, 218-219, 238-239, 280, 294
src/charm_state.py                 67      1     10      1    97%   139
src/charm_types.py                 11      0      0      0   100%
src/database_client.py             53      1     10      3    94%   35, 47->exit, 69->exit
src/database_observer.py           54      4      6      0    93%   70-72, 88
src/exceptions.py                   4      0      0      0   100%
src/mjolnir.py                     76      6     20      1    91%   60-64, 73
src/observability.py                9      0      0      0   100%
src/pebble.py                      88      9     16      6    86%   91-92, 94, 102, 104, 106, 110, 131-132
src/saml_observer.py               45      1      8      0    98%   64
src/synapse/__init__.py             3      0      0      0   100%
src/synapse/api.py                161      2     22      2    98%   207, 376
src/synapse/workload.py           256     10     42      6    95%   382->exit, 411-412, 464-465, 501-502, 518, 567->570, 616, 618, 623
src/user.py                        24      0      4      0   100%
---------------------------------------------------------------------------
TOTAL                            1115     42    192     23    95%

Static code analysis report

Run started:2024-01-08 14:43:31.462696

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 5929
  Total lines skipped (#nosec): 4
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):