[TraceQL] Enhance Autocomplete to Differentiate Resource and Span Attributes

[faustodavid]

Is your feature request related to a problem? Please describe.
When using TraceQL, I noticed that when I write {resource.}, I receive suggestions for all possible attributes from both the resource and span scope. This can be overwhelming when I only want to see the attributes specific to either the resource or the span.

Describe the solution you'd like
I would like to propose that typing . returns all possible attributes, typing resource. only displays the resource attributes, and typing span. only displays the span attributes. This would enhance the usability and make it easier to navigate and select the desired attributes based on the scope we are working with.

[joe-elliott]

Great call out! We added support here: #2282

and there's an issue here to add support in Grafana: grafana/grafana#67011

Looks like there's a PR open! #2471

[joe-elliott]

I'm normally terrible about closing issues b/c I want there to be discussion even if it's not something we agree with or have time to work on, but this one seems pretty covered.

Thanks @faustodavid!