[workload] Add query string in the URL for GET requests

[ibelem]

End-users must select framework, category, model, backend, preference and iterations one by one then run the workload testing, even when they played for a while and went back.

Please add traditional url parameters support of these options to enter specific tests directly for HTTP GET method, e.g. ?f=WebNN&c=ic&m=mobilenetv1_tflite&b=wasm&p=none&i=120