Create sub packages for each optimiser

[Vaibhavdixit02]

This PR changes the structure of the repo and stops use of Requires based loading, the supported optimiser backends will each now be a sub package.

[ChrisRackauckas]

And we should make sure to add the tests for them too

[Vaibhavdixit02]

Yes I am doing that as well

[ChrisRackauckas]

Can you get to a place where tests pass and we can merge? Please don't do this in a way where every package has to be moved before the first PR can merge.

[Vaibhavdixit02]

Can you get to a place where tests pass and we can merge? Please don't do this in a way where every package has to be moved before the first PR can merge.

I am not sure I understood? So right now I have moved Flux and BBO and their tests will pass (I haven't added it to CI and adjusted existing test files) so are you suggesting to do this incrementally in subsequent PRs?

[Vaibhavdixit02]

In my opinion we should do it in this PR and bump to v2 since it would be a significant workflow change so doing it partially might not be ideal

[codecov]

Codecov Report

Merging #220 (5c234ad) into master (6d0de7f) will decrease coverage by 17.08%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master     #220       +/-   ##
===========================================
- Coverage   62.37%   45.29%   -17.09%     
===========================================
  Files          31        8       -23     
  Lines        1119      170      -949     
===========================================
- Hits          698       77      -621     
+ Misses        421       93      -328     

Impacted Files	Coverage Δ
src/GalacticOptim.jl	100.00% <ø> (ø)
src/utils.jl	33.33% <ø> (-5.70%)	⬇️
src/function/tracker.jl	0.00% <0.00%> (-100.00%)	⬇️
src/function/finitediff.jl	0.00% <0.00%> (-100.00%)	⬇️
src/function/reversediff.jl	0.00% <0.00%> (-95.46%)	⬇️
src/function/zygote.jl	52.17% <0.00%> (-43.29%)	⬇️
src/function/forwarddiff.jl	90.24% <0.00%> (-9.76%)	⬇️
...lutionStrategy/src/GalacticCMAEvolutionStrategy.jl
...b/GalacticEvolutionary/src/GalacticEvolutionary.jl
... and 15 more

📣 Codecov can now indicate which changes are the most critical in Pull Requests. Learn more

[ChrisRackauckas]

All of the system-wide issues seem to be fixed, so I'm merging so that each of the per-package issues that are remaining can be handled separately.