fw/execution: add record_ui_state() to context
fw/execution: add record_ui_state() to context

Add a method to record UI state (take a screen shot, and, for Android
devices, dump the UI tree structure) to ExecutionContext.

setrofim/workload-automation,lisatn/workload-automation,setrofim/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,lisatn/workload-automation