Ability to tag items and they would be shown in folders on dashboard

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Is your feature request related to a problem? Please describe the problem.

The Aspire dashboard gets very busy and more organization features would be helpful, i.e. Tags/Folders

### Describe the solution you'd like

Ability to add a `.WithTag("my tag name")`.

Aspire dashboard would then present any related items in a folder type structure with that tag name

Example:
```csharp
var miscFunctions = builder
.AddAzureFunctionsProject("MiscFunctions")
.WithTag("Functions");

var reportGenerator = builder
.AddAzureFunctionsProject("ReportGenerator")
.WithTag("Functions");
```

### Additional context

_No response_