Use common github workflows in CI

[roxblnfk]

🔍 What was changed

Reuse common Github Workflows from cycle/gh-actions
Apply Spiral code style v2

[codecov]

Codecov Report

Attention: Patch coverage is 93.83117% with 57 lines in your changes missing coverage. Please review.

Project coverage is 95.42%. Comparing base (a5e3a51) to head (8ae2ece).
Report is 14 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
src/Driver/Driver.php	88.73%	8 Missing ⚠️
src/Schema/AbstractIndex.php	75.00%	6 Missing ⚠️
src/polyfill.php	28.57%	5 Missing ⚠️
src/Driver/Postgres/Schema/PostgresColumn.php	95.00%	4 Missing ⚠️
src/Injection/JsonExpression.php	50.00%	4 Missing ⚠️
src/Driver/Compiler.php	89.65%	3 Missing ⚠️
src/Driver/ReadonlyHandler.php	0.00%	3 Missing ⚠️
src/Schema/AbstractTable.php	92.10%	3 Missing ⚠️
src/Config/ConnectionConfig.php	33.33%	2 Missing ⚠️
src/Driver/SQLServer/SQLServerDriver.php	90.90%	2 Missing ⚠️
... and 10 more

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x     #210      +/-   ##
============================================
+ Coverage     95.34%   95.42%   +0.08%     
+ Complexity     1878     1866      -12     
============================================
  Files           130      130              
  Lines          5198     5204       +6     
============================================
+ Hits           4956     4966      +10     
+ Misses          242      238       -4     

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