Add `RetryWithBehaviour`

[HugoSay]

This PR Adds RetryWithBehaviour Operator.

The implementation was largely inspired by (copied from and adapted to be honest) the one on the RxSwiftExt Package

I'd love some feedbacks on this.

[HugoSay]

This is kind of linked to @danielt1263's https://github.com/CombineCommunity/CombineExt/pull/101

[HugoSay]

I'll add some documentation if the operator is worthy 😃

[codecov[bot]]

Codecov Report

Merging #110 (80544cb) into main (0880829) will increase coverage by 0.09%. The diff coverage is 99.09%.

:exclamation: Current head 80544cb differs from pull request most recent head 4b04c85. Consider uploading reports for the commit 4b04c85 to get more accurate results

@@            Coverage Diff             @@
##             main     #110      +/-   ##
==========================================
+ Coverage   97.12%   97.22%   +0.09%     
==========================================
  Files          62       64       +2     
  Lines        3338     3563     +225     
==========================================
+ Hits         3242     3464     +222     
- Misses         96       99       +3     

Impacted Files	Coverage Δ
Tests/RetryWithBehaviourTests.swift	98.89% <98.89%> (ø)
Sources/Operators/RetryWithBehaviour.swift	100.00% <100.00%> (ø)
Sources/Operators/Internal/Lock.swift	80.00% <0.00%> (-3.34%)	:arrow_down:

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