Feat(): Set UNICORN_SIDEKIQ_MAX_RSS env variable

[alithethird]

Created an option to set the UNICORN_SIDEKIQ_MAX_RSS env variable due to issue

Overview

Rationale

Juju Events Changes

Module Changes

Library Changes

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 ebdbb2d

Name              Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------
src/charm.py        373     41     84     15    87%   184, 192-193, 205, 337->345, 378->383, 395, 584-586, 591-592, 604-606, 611-612, 624-626, 649-651, 693->exit, 703->exit, 752-755, 765-766, 790-791, 803-804, 831-833, 835->840, 837-838, 880-881, 897-898, 908->exit, 922
src/database.py      29      1      8      1    95%   56
-------------------------------------------------------------
TOTAL               402     42     92     16    88%

Static code analysis report

Run started:2024-12-09 03:50:51.992777

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2478
  Total lines skipped (#nosec): 2
  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):

[yanksyoon]

LGTM, just for my own learning, what does sidekiq do?