[WIP]Stats and State

[Vaibhavdixit02]

Checklist

• [ ] Appropriate tests were added
• [ ] Any code changes were done in a way that does not break public API
• [ ] All documentation related to code changes were updated
• [ ] The new code follows the contributor guidelines, in particular the SciML Style Guide and COLPRAC.
• [ ] Any new documentation only uses public API

Additional context

Add any other context about the problem here.

[codecov[bot]]

Codecov Report

Attention: 44 lines in your changes are missing coverage. Please review.

Comparison is base (80d8465) 8.46% compared to head (c0e59f6) 8.70%.

:exclamation: Current head c0e59f6 differs from pull request most recent head abfa548. Consider uploading reports for the commit abfa548 to get more accurate results

Files	Patch %	Lines
lib/OptimizationFlux/src/OptimizationFlux.jl	0.00%	7 Missing :warning:
...onStrategy/src/OptimizationCMAEvolutionStrategy.jl	0.00%	6 Missing :warning:
lib/OptimizationBBO/src/OptimizationBBO.jl	0.00%	5 Missing :warning:
...zationEvolutionary/src/OptimizationEvolutionary.jl	0.00%	4 Missing :warning:
lib/OptimizationMOI/src/nlp.jl	0.00%	4 Missing :warning:
lib/OptimizationOptimJL/src/OptimizationOptimJL.jl	63.63%	4 Missing :warning:
lib/OptimizationNLopt/src/OptimizationNLopt.jl	0.00%	3 Missing :warning:
lib/OptimizationGCMAES/src/OptimizationGCMAES.jl	0.00%	2 Missing :warning:
...mization/src/OptimizationMultistartOptimization.jl	0.00%	2 Missing :warning:
lib/OptimizationMOI/src/moi.jl	0.00%	1 Missing :warning:
... and 6 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #652 +/- ## ========================================= + Coverage 8.46% 8.70% +0.24% ========================================= Files 30 31 +1 Lines 2470 2504 +34 ========================================= + Hits 209 218 +9 - Misses 2261 2286 +25 ```

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[ChrisRackauckas]

Maybe it's time for a new design of the arguments list?

[sethaxen]

@Vaibhavdixit02 The changes to most of the integration packages are marked as breaking, but there's no description for me to know whether it is safe to upgrade. Would it be possible to summarize what this PR does and in what way it is breaking?

[Vaibhavdixit02]

@sethaxen sure, it was breaking because the callback arguments have changed, instead of the optimization variables as the first argument now it will be a OptimizationState object. I have updated most of the docstring and am working on getting the examples updated, I am trying to get it done by this weekend!

[sethaxen]

Thanks, @Vaibhavdixit02 !

[ChrisRackauckas]

We need to add a note on the README

[oscardssmith]

Since this was a breaking change, shouldn't this have required a major version bump?

[ChrisRackauckas]

It did get a major IIRC

[SebastianM-C]

Optimization.jl didn't get a major version bump, but the backends did get a minor bump (since they are 0.x).