Create new samples for Aspire + Azure Functions integration

[captainsafia]

Ahead of the upcoming release of preview support for Aspire and Azure Functions, we'll want to include a sample of the integration in this repo.

There are probably two canonical Functions examples that we might want to include here:

• Using HTTP triggers to implement a web hook
• Implementing a web-queue-worker scenario using a Minimal API service and an Azure Storage Queue or Azure Service Bus trigger

Along the way, we'll want to showcase the following features of the integration:

• Support for AddServiceDefaults with the new Functions minimal builder
• Support for Aspire-injected resources (show uploading something to an Azure Storage Blob via the injected BlobServiceClient)
• Support for service discovery with Functions HTTP triggers

[captainsafia]

@bradygaster has an image gallery sample that he's been working on that he will pop in here.