Render mas config from template

[Thanhphan1147]

This PR adds the template for the mas configuration file. Required values used to generate the configuration file is fetched from juju secrets and charm config values at the beginning of the hooks.

Checklist

• The charm style guide was applied
• The contributing guide was applied
• The changes are compliant with ISD054 - Manging Charm Complexity
• The documentation is generated using src-docs
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex)

[github-actions]

Test coverage for ad63e70

Name                                    Stmts   Miss Branch BrPart  Cover   Missing
-----------------------------------------------------------------------------------
src/actions/__init__.py                     1      0      0      0   100%
src/actions/register_user.py               21      0      2      0   100%
src/admin_access_token.py                   9      0      0      0   100%
src/auth/__init__.py                        0      0      0      0   100%
src/auth/mas.py                            12      0      0      0   100%
src/backup.py                             175      5     20      2    96%   353-354, 423-424, 481->483, 484
src/backup_observer.py                    134     16     12      0    89%   132-135, 140-143, 179-182, 211-214
src/charm.py                              305     20     70     11    92%   140->142, 145, 258, 262-263, 269-270, 291-292, 321, 328, 408-412, 415-416, 444-446, 466, 502-503
src/charm_types.py                         30      0      0      0   100%
src/database_client.py                     57      1      8      4    92%   35, 47->exit, 69->exit, 88->98
src/database_observer.py                   49      4      2      0    92%   61-64
src/exceptions.py                           3      0      0      0   100%
src/matrix_auth_observer.py                68      8     12      3    86%   63, 66, 145, 159-163
src/media_observer.py                      45      4      2      1    89%   60-62, 81
src/mjolnir.py                            102      3     30      3    95%   85, 94->110, 115-119
src/observability.py                       14      0      0      0   100%
src/pebble.py                             210     29     46     12    84%   58->63, 177->exit, 188-192, 226-227, 247-248, 266-269, 324->329, 334-335, 347-348, 350-351, 384, 386, 388, 390, 392, 420, 474-479
src/redis_observer.py                      39      3      4      0    93%   63-66
src/s3_parameters.py                       22      0      4      0   100%
src/smtp_observer.py                       61      4     14      2    92%   82-86, 89, 108->113
src/state/__init__.py                       0      0      0      0   100%
src/state/charm_state.py                  128      9     32      7    90%   166, 170, 191, 216, 222, 228, 232-233, 316
src/state/mas.py                           72      7      4      2    88%   145, 151-152, 176-178, 193
src/state/validation.py                    36      3      2      0    92%   105-107
src/synapse/__init__.py                     4      0      0      0   100%
src/synapse/admin.py                       19      2      2      0    90%   40-41
src/synapse/api.py                        175      3     20      3    97%   176, 229, 402
src/synapse/workload.py                   138      6     24      0    94%   401-402, 412-415
src/synapse/workload_configuration.py     148     26     34     12    79%   88->exit, 92-93, 141-142, 171, 191-192, 224-225, 258, 267-268, 283, 288-289, 310-311, 330->335, 336, 354->356, 366-367, 395, 403->405, 405->407, 412-413, 433->440, 443, 463-464
src/user.py                                23      0      2      0   100%
-----------------------------------------------------------------------------------
TOTAL                                    2100    153    346     62    91%

Static code analysis report

Working... ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 0:00:00
Run started:2024-12-10 15:35:16.355149

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 11166
  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):

[gregory-schiano]

Approved, there's just a small typo to fix

[gregory-schiano]

Small typo: peer instead of pees