Implement the engine.remove method to allow instance deletion from a query

[art049]

Continuing the initial work from @joeriddles in #147

[github-actions]

🚀 Deployed on https://docs-preview-237--odmantic.netlify.app

[codecov]

Codecov Report

Merging #237 (a52d9c9) into master (27ff069) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #237   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           38        38           
  Lines         3480      3560   +80     
  Branches       590       596    +6     
=========================================
+ Hits          3480      3560   +80     

Flag	Coverage Δ
tests-3.10-4-standalone	97.92% <74.71%> (-0.59%)	⬇️
tests-3.10-4.2-standalone	97.92% <74.71%> (-0.59%)	⬇️
tests-3.10-4.4-standalone	97.92% <74.71%> (-0.59%)	⬇️
tests-3.7-4-standalone	97.95% <74.71%> (-0.60%)	⬇️
tests-3.7-4.2-standalone	97.95% <74.71%> (-0.60%)	⬇️
tests-3.7-4.4-standalone	97.95% <74.71%> (-0.60%)	⬇️
tests-3.8-4-replicaSet	98.73% <100.00%> (+0.02%)	⬆️
tests-3.8-4-standalone	97.92% <74.71%> (-0.59%)	⬇️
tests-3.8-4.2-sharded	96.76% <74.71%> (-0.56%)	⬇️
tests-3.8-4.2-standalone	97.92% <74.71%> (-0.59%)	⬇️
tests-3.8-4.4-standalone	97.92% <74.71%> (-0.59%)	⬇️
tests-3.9-4-standalone	97.80% <74.71%> (-0.59%)	⬇️
tests-3.9-4.2-standalone	97.80% <74.71%> (-0.59%)	⬇️
tests-3.9-4.4-standalone	97.80% <74.71%> (-0.59%)	⬇️

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Impacted Files	Coverage Δ
odmantic/engine.py	100.00% <100.00%> (ø)
tests/integration/test_engine.py	100.00% <100.00%> (ø)
tests/integration/test_engine_reference.py	100.00% <100.00%> (ø)

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[art049]

Will be merged after #231