feat: make rollback jobified

[belplaton]

P.S. The source files have been sent in a private message.

Collider Rollback: execution refactor (single-thread → jobified + deferred)

This PR changes the execution model of collider rollback to a jobified pipeline and adds a deferred rollback path which is executed on a chosen tick phase.

What changed

• RollbackManager now owns a RollbackCollection which stores rollback state in job-friendly native containers and drives snapshot/rollback/return via jobs.
• Snapshot generation is driven from TimeManager:
  • OnPostTick: always creates snapshots.
  • OnPreTick / OnTick / OnPostTick: optionally executes deferred rollback depending on _deferredRollbackOrder (PreTick, Tick, PostTick).

Multithreading approach used

• Transforms are processed through TransformAccessArray and IJobParallelForTransform:
  • _colliderRollbacksTAA: one entry per ColliderRollback root.
  • _rollingCollidersTAA: flattened list of all rolling collider transforms across all ColliderRollback instances.
• Snapshot history is stored as a ring buffer per rolling collider:
  • _rollingCollidersSnapshots is a flattened ring [rollingColliderIdx * MaxSnapshots + frame].
  • _rollingCollidersWriteIndices stores per-rolling write pointers.
• A group-level rolled-back mask is maintained (_colliderRollbacksRolledBackMask) to:
  • Freeze snapshot capture for rolled-back groups.
  • Avoid repeated rollback application for the same group in a single pass.

Snapshot pipeline (job chain)

• CreateSnapshots() schedules and completes:
  1. IncrementGroupsFramesJob (IJobParallelFor) – increments available history frames per group (saturates at MaxSnapshots) if not rolled back.
  2. PopulateColliderRollbackSnapshotsJob (IJobParallelForTransform) – captures TRS snapshot for each ColliderRollback root.
  3. PopulateRollingColliderSnapshotsJob (IJobParallelForTransform) – writes rolling collider TRS into the per-collider ring buffer.

Rollback execution (jobified)

• Rollback all (per scene/time): ApplyRollbackJob runs over _rollingCollidersTAA and applies the correct snapshot (lerp/exact) for each rolling collider.
• Rollback by ray request: ApplyRollbackRaycastJob runs over _rollingCollidersTAA and filters targets by:
  • Scene handle (optional)
  • Requested RollbackPhysicsType
  • Ray vs OBB test computed in the job (no physics queries)
  • On hit, applies rollback for the rolling collider and marks the group as rolled back.

Deferred rollback execution (jobified, two-stage)

• Requests are appended to a write buffer (_writeRequests), then processed in batches by swapping buffers ((_readRequests, _writeRequests) = ...) to avoid mutation during processing.
• RollbackDeferred() schedules and completes:
  1. ComputeDeferredRollbackSumsJob (IJobParallelFor, one iteration per group) – iterates all requests (typically small) and computes per-group sumDecimalFrame and hitCount for requests whose rays hit the group OBB.
  2. ApplyDeferredRollbackJob (IJobParallelForTransform) – applies rollback to rolling colliders using the per-group averaged decimal frame (sum / count).

Return execution (jobified)

• ReturnRollbackAllJob (IJobParallelForTransform) restores each rolling collider to the most recent snapshot and clears the group rolled-back mask.

Data / API changes

• Added RollbackManager.RollbackRequest (stores scene handle, ray data, rollback time, physics type) and RollbackManager.DeferredRollbackOrder.
• Added RollbackManager.OnRollbackDeferred event and RequestRollbackDeferred(...) + RollbackDeferred() methods.
• Bounding box filtering is now handled via per-group BoundingBoxData (OBB parameters) and math ray tests inside jobs (instead of relying on a bounding-box layer check).

Files

• Added: Assets/FishNet/Runtime/Plugins/ColliderRollback/Scripts/RollbackCollection.cs
• Added: Assets/FishNet/Runtime/Plugins/ColliderRollback/Scripts/ColliderSnapshot.cs
• Added/expanded: Assets/FishNet/Runtime/Plugins/ColliderRollback/Scripts/RollbackManager.Types.cs (jobs + OBB/raycast helpers)
• Updated: Assets/FishNet/Runtime/Plugins/ColliderRollback/Scripts/RollbackManager.cs, ColliderRollback.cs, ColliderRollbackEditor.cs
• Removed: Assets/FishNet/Runtime/Plugins/ColliderRollback/Scripts/ColliderRollback.Types.cs