Add RepositoryTrait

[Tigrov]

Fixed issues

• Add findByPk() #6 No matters to make it separate
• Suggestion: ActiveRecord::findAll() without $condition #20
• Make findByCondition() public or allow findOne()/findAll() query condition modification #66 use find()
• weird behavior of findAll #67 use find()->where()

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	✔️
Fixed issues	#344

[codecov]

Codecov Report

Attention: Patch coverage is 89.70588% with 7 lines in your changes missing coverage. Please review.

Project coverage is 88.41%. Comparing base (0745336) to head (98a3100).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/ActiveQuery.php	89.36%	5 Missing ⚠️
src/AbstractActiveRecord.php	75.00%	1 Missing ⚠️
src/Trait/FactoryTrait.php	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #414      +/-   ##
============================================
- Coverage     88.65%   88.41%   -0.25%     
- Complexity      567      575       +8     
============================================
  Files            16       17       +1     
  Lines          1357     1372      +15     
============================================
+ Hits           1203     1213      +10     
- Misses          154      159       +5     

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