fix!: Send Service Bus events as single objects instead of arrays

[Copilot]

Summary

Azure Event Grid delivers events to Service Bus as single JSON objects, not wrapped in arrays. The simulator previously always wrapped events in a single-element array ([{...}]), forcing consumers to add unnecessary array-handling logic that wouldn't be needed against real Azure.

This PR fixes Service Bus delivery to always use single event format, matching Azure's actual behavior.

BREAKING CHANGE: Service Bus message bodies are now single JSON objects ({...}) instead of single-element arrays ([{...}]). Consumers that parse the array format will need to be updated.

Changes

• ServiceBusEventDeliveryService: Always uses SerializeSingle() for both delivery paths
• IEventSchemaFormatter: Added SerializeSingle() method for non-array serialization
• CloudEventSchemaFormatter / EventGridSchemaFormatter: Implemented SerializeSingle()
• commit-msg hook: Updated to support ! breaking change indicator per Conventional Commits spec
• Wiki: Updated Topics.md to document the delivery format difference between HTTP and Service Bus subscribers
• Tests: Added tests verifying single-object format for both schemas, and that Serialize() still returns arrays for other subscriber types (HTTP, StorageQueue, EventHub)

Before / After

Subscriber Type	Before	After
Service Bus	[{"id":"...","type":"..."}]	{"id":"...","type":"..."}
HTTP	[{"id":"...","type":"..."}]	[{"id":"...","type":"..."}] (unchanged)

• Fixes [Feature]: EventGrid to ServiceBus as SingleEvent #259

[Copilot]

Pull request overview

This PR adds configurable single event delivery for ServiceBus subscribers to match Azure EventGrid's actual behavior. Previously, the simulator always wrapped events in arrays, requiring workarounds in event parsing logic.

Changes:

• Added SerializeSingle() method to formatters for non-array event serialization
• Modified ServiceBus delivery to always use single event format (matching Azure behavior)
• Updated dependency versions (Meziantou.Analyzer, coverlet.collector)

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
wiki	Updated subproject commit reference
src/Directory.Packages.props	Bumped analyzer and test coverage tool versions
src/AzureEventGridSimulator/Domain/Services/IEventSchemaFormatter.cs	Added SerializeSingle() interface method
src/AzureEventGridSimulator/Domain/Services/EventGridSchemaFormatter.cs	Implemented SerializeSingle() without array wrapper
src/AzureEventGridSimulator/Domain/Services/Delivery/ServiceBusEventDeliveryService.cs	Changed to use SerializeSingle() instead of Serialize()
src/AzureEventGridSimulator/Domain/Services/CloudEventSchemaFormatter.cs	Implemented SerializeSingle() without array wrapper
src/AzureEventGridSimulator.Tests/UnitTests/Subscribers/Delivery/ServiceBusEventDeliveryServiceTests.cs	Added tests for single event serialization
.githooks/commit-msg	Enhanced commit message validation to support breaking change indicator

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