Allow to override events and expected version

[alexeyzimarev]

Also, can add or remove events. Fixes #398

[github-actions]

Test Results

 28 files  + 14   28 suites  +14   1h 20m 21s ⏱️ + 51m 0s
193 tests +  3  193 ✅ +  3  0 💤 ±0  0 ❌ ±0 
388 runs  +196  388 ✅ +196  0 💤 ±0  0 ❌ ±0 

Results for commit 4245099. ± Comparison against base commit 4007e08.

This pull request removes 4 and adds 7 tests. Note that renamed tests count towards both.

Eventuous.Tests.EventStore.Metrics.MetricsTests ‑ ShouldMeasureSubscriptionGapCountBase
Eventuous.Tests.Postgres.Metrics.MetricsTests ‑ ShouldMeasureSubscriptionGapCountBase
Eventuous.Tests.SqlServer.Metrics.MetricsTests ‑ ShouldMeasureSubscriptionGapCountBase
Eventuous.Tests.Subscriptions.SequenceTests ‑ ShouldReturnFirstBefore(CommitPositionSequence, CommitPosition { Position: 0, Sequence: 2, Timestamp: 2024-12-22T11:34:20.4517102+00:00 })

Eventuous.Tests.Application.CommandServiceTests ‑ Should_execute_amended_append
Eventuous.Tests.Application.FunctionalServiceTests ‑ Should_execute_amended_append
Eventuous.Tests.EventStore.Metrics.MetricsTests ‑ ShouldMeasureSubscriptionGapCountBase_Esdb
Eventuous.Tests.Postgres.Metrics.MetricsTests ‑ ShouldMeasureSubscriptionGapCountBase_Postgres
Eventuous.Tests.SqlServer.Metrics.MetricsTests ‑ ShouldMeasureSubscriptionGapCountBase_SqlServer
Eventuous.Tests.Subscriptions.SequenceTests ‑ ShouldReturnFirstBefore(CommitPositionSequence, CommitPosition { Position: 0, Sequence: 2, Timestamp: 2024-12-27T11:13:34.7683770+00:00 })
Eventuous.Tests.Subscriptions.SequenceTests ‑ ShouldReturnFirstBefore(CommitPositionSequence, CommitPosition { Position: 0, Sequence: 2, Timestamp: 2024-12-27T11:13:48.5103024+00:00 })

♻️ This comment has been updated with latest results.