Clean up SA module & add example

[maypink]

1. Example of SA usage with pipelines
2. Refactor existing SA functionality: remove useless classes that are alredy exist in GOLEM
3. MultiOperationsHPAnalyze is left for the next iteration of refactoring since it contains new logic abput hyperparameters optimization with SA
4. Documentstion refactoring will be done after refactoring with MultiOperationsHPAnalyze will be completed.

[aim-pep8-bot]

Hello @maypink! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers:

Comment last updated at 2023-08-07 09:02:13 UTC

[codecov[bot]]

Codecov Report

Merging #1114 (979cd2c) into master (16d507f) will increase coverage by 0.11%. Report is 6 commits behind head on master. The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #1114      +/-   ##
==========================================
+ Coverage   78.65%   78.77%   +0.11%     
==========================================
  Files         130      131       +1     
  Lines        9306     9322      +16     
==========================================
+ Hits         7320     7343      +23     
+ Misses       1986     1979       -7     

Files Changed	Coverage Δ
fedot/core/pipelines/pipeline.py	95.80% <50.00%> (ø)

... and 6 files with indirect coverage changes