Test: Add tests for Monika configuration codes

[haricnugraha]

Monika Pull Request (PR)

What feature/issue does this PR add

Add tests for Monika configuration codes

How did you implement / how did you fix it

1. Separate raw config type with validated and sanitized config to reduce conditional checks.
2. Move initialize (read, parse, validate, sanitize and store) configuration function to the main function to improve readability.
3. Extract functions to parsing, validating and sanitizing config.
4. Extract function to watching config changes.
5. Remove unnecessary code.

How to test

1. Run npm test.
2. Run npm run prod_test.
3. Run in Symon mode and test with the following flow: Disabled -> Enabled -> Incident -> Recovery.

Demo

output.webm

[codecov]

Codecov Report

Attention: Patch coverage is 86.84211% with 30 lines in your changes are missing coverage. Please review.

Project coverage is 63.97%. Comparing base (6a29470) to head (507e0df).
Report is 6 commits behind head on main.

Files	Patch %	Lines
src/jobs/check-database.ts	35.71%	9 Missing ⚠️
src/components/config/validate.ts	73.68%	3 Missing and 2 partials ⚠️
src/components/config/parser/parse.ts	87.87%	2 Missing and 2 partials ⚠️
src/loaders/jobs.ts	50.00%	4 Missing ⚠️
src/components/config/watcher.ts	93.33%	2 Missing ⚠️
src/events/subscribers/application.ts	60.00%	2 Missing ⚠️
src/commands/monika.ts	85.71%	0 Missing and 1 partial ⚠️
src/components/config/create.ts	85.71%	0 Missing and 1 partial ⚠️
src/components/config/get.ts	97.22%	0 Missing and 1 partial ⚠️
src/jobs/summary-notification.ts	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1279      +/-   ##
==========================================
+ Coverage   62.51%   63.97%   +1.46%     
==========================================
  Files         112      108       -4     
  Lines        3391     3362      -29     
  Branches      591      573      -18     
==========================================
+ Hits         2120     2151      +31     
+ Misses       1079     1030      -49     
+ Partials      192      181      -11     

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[dennypradipta]

Tested, can report and still receive probe changes. Nicely done