Add tuning history to OptHistory

[MorrisNein]

Solves #1187 (follows https://github.com/aimclub/GOLEM/pull/228).

Changes usages of history.individuals to history.generations, since the old field name is deprecated in GOLEM.

[codecov[bot]]

Codecov Report

Merging #1188 (196d366) into master (0bc7c59) will increase coverage by 0.03%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1188      +/-   ##
==========================================
+ Coverage   79.50%   79.53%   +0.03%     
==========================================
  Files         145      145              
  Lines       10021    10023       +2     
==========================================
+ Hits         7967     7972       +5     
+ Misses       2054     2051       -3     

Files	Coverage Δ
fedot/api/api_utils/api_composer.py	100.00% <100.00%> (ø)
fedot/core/pipelines/tuning/tuner_builder.py	82.41% <100.00%> (+0.80%)	:arrow_up:

... and 1 file with indirect coverage changes