Adds a new `Elsa.Http.Webhooks` module, enabling workflows to receive incoming webhook events and dispatch outgoing webhooks. This integrates the WebhooksCore library.
Further improvements include:
- Enhanced validation for configured application instance names, providing clearer feedback, especially regarding Azure Service Bus entity name limits.
- Improved API error reporting for shell reload operations, distinguishing between blueprint not found (404) and other failures (503).
- Updated release announcement rendering to dynamically reference the correct major.minor release line for feedback messages.
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