Dynamic scheduling optimizations

[Anders429]

Closes #73.

This provides dynamic schedule optimizations at runtime. While schedule stages are already defined at compile time according to the views of each task in the schedule, this provides an extra optimization when running the schedule on a specific World, namely that it will check whether extra tasks from the next stage can be scheduled alongside the current tasks on that world specifically by keeping track of which component columns are borrowed from which archetypes.

When running on ecs_bench_suite, I saw a >20% time save on the scheduling test. This is because the optimization actually is applied to that test specifically, due to the last two systems not actually borrowing components from the same archetypes. This is a good performance increase.

With a bit of clean up, this is ready to be merged. Will need to fix some lints, add some tests, and update the changelog.

[codecov-commenter]

Codecov Report

Merging #167 (1988e77) into dev (ccfd465) will decrease coverage by 0.57%.
The diff coverage is 74.84%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@            Coverage Diff             @@
##              dev     #167      +/-   ##
==========================================
- Coverage   94.80%   94.23%   -0.57%     
==========================================
  Files          73       75       +2     
  Lines       10857    11158     +301     
==========================================
+ Hits        10293    10515     +222     
- Misses        564      643      +79     

Impacted Files	Coverage Δ
src/archetype/identifier/mod.rs	95.09% <ø> (ø)
src/system/schedule/stager.rs	81.25% <ø> (ø)
src/system/schedule/task/sealed.rs	100.00% <ø> (ø)
src/system/schedule/stage.rs	52.84% <52.06%> (-47.16%)	⬇️
src/system/schedule/stages.rs	64.70% <58.62%> (-35.30%)	⬇️
src/registry/contains/views/sealed.rs	96.47% <66.66%> (-3.53%)	⬇️
src/registry/sealed/view.rs	92.74% <66.66%> (-1.57%)	⬇️
src/query/result/archetype_claims.rs	100.00% <100.00%> (ø)
src/query/view/claim.rs	100.00% <100.00%> (ø)
src/world/mod.rs	100.00% <100.00%> (ø)
... and 1 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.