[Feature] Implement APOLLO optimizer

[kozistr]

Problem (Why?)

Close #311

Solution (What/How?)

• implement APOLLO optimizer
• rename the Apollo to ApolloDQN

Other changes (bug fixes, small refactors)

N/A

Notes

N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (7bb85f9) to head (b40e8d4).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #312   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          100       101    +1     
  Lines         7733      7814   +81     
=========================================
+ Hits          7733      7814   +81     

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