Add schema manager

[arogachev]

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

[what-the-diff]

PR Summary

• Renamed RbacDbInit to SchemaManager
  Updated the class name to better reflect its purpose
• Added interface for schema manager and implemented it
  Introduced a new interface for better code organization and maintainability
• Removed unneeded console command
  Eliminated unused command that was only necessary for tests
• Updated references to old classes
  Ensured smooth transition by replacing all instances of old class names with the new ones

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +2.19 🎉

Comparison is base (5a3b8d6) 97.80% compared to head (af96341) 100.00%.

❗ Current head af96341 differs from pull request most recent head 3b151af. Consider uploading reports for the commit 3b151af to get more accurate results

Additional details and impacted files

@@              Coverage Diff              @@
##             master       #23      +/-   ##
=============================================
+ Coverage     97.80%   100.00%   +2.19%     
- Complexity       78        85       +7     
=============================================
  Files             9         8       -1     
  Lines           455       434      -21     
=============================================
- Hits            445       434      -11     
+ Misses           10         0      -10     

Impacted Files	Coverage Δ
src/DbSchemaManager.php	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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