Track sent components for each entity

[Shatur]

Objective

We'll need this for per-component visibility, but this change is useful on its own because it fixes replication for rules with multiple components that were inserted on different ticks.

For example, you have a replication rule for (A, B). You spawn an entity with A, and on the next tick you insert B. Without this change, B is replicated, but A is wrongly considered as sent. I added a test for it.

Implementation details

Inside ClientTicks, we now store a HashSet<ComponentId> for each entity in addition to ticks. To make it look nicer, I wrapped them in an EntityTicks struct. I also renamed mutations to entities because it fits better (it's not only for mutation ticks - it's also updated on insertions and removals). To avoid double hashing for mutations, I switched to using the entry API and made the field mutable. Because of this change, I also had to remove the is_new_for_client helper (in one place I need entry API and in another it's a simple contains check). I adjusted the doc comment and with the new naming it should still be clear.

MutateInfo now stores a Vec<ComponentId> for each entity, and I update the acknowledged components inside EntityTicks.

During removals, we now need to remove components from the acknowledged lists, so I adjusted the logic similarly to how we collect changes.

[codecov]

Codecov Report

❌ Patch coverage is 93.75000% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.79%. Comparing base (394b438) to head (2066211).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/server.rs	93.33%	4 Missing ⚠️
src/server/replication_messages/updates.rs	93.47%	3 Missing ⚠️
src/shared/replication/client_ticks.rs	85.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #604      +/-   ##
==========================================
- Coverage   91.90%   91.79%   -0.11%     
==========================================
  Files          58       58              
  Lines        3310     3364      +54     
==========================================
+ Hits         3042     3088      +46     
- Misses        268      276       +8     

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