✅ Fixed a bug around season endpoints

[pushrbx]

Fixes #521

• Added a new parameter: continuing -- e.g. /v4/seasons/2024/winter?continuing
• Continuing items from previous seasons are now excluded by default. API consumers are now expected to make a subsequent request to get continuing items in a season from previous seasons. This should be inline with what MAL is doing on their season page (https://myanimelist.net/anime/season/2024/winter)
• did some code cleanup

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 57.84%. Comparing base (75a641f) to head (4e479f0).

Files	Patch %	Lines
app/Features/QueryCurrentAnimeSeasonHandler.php	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #527      +/-   ##
============================================
+ Coverage     57.76%   57.84%   +0.08%     
  Complexity     1352     1352              
============================================
  Files           339      339              
  Lines          5209     5212       +3     
============================================
+ Hits           3009     3015       +6     
+ Misses         2200     2197       -3     

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[irfan-dahir]

@pushrbx Sorry for the late review. Overall functionality LGTM. There's one issue with flags which I've pointed out.

[pushrbx]

There is another bug in the test system, which makes the tests flaky. 😫

[pushrbx]

I've added some seeding based on the job id if the test is being ran in a github action runner. Also I've tweaked the factories:

• end_date -> the generated value should be less than the end date by at least one day.
• scores: padded the generated values with a fraction so they would be less or greater than min/max value.