Remove options to collect individual IME traces

Now CollectTracesComponent displays a single "IME" option.
The three options never made much sense, because IME tracing
has always been a "trace all or nothing" configuration.

Get rid of the concept of trace collection
(remove TraceConfiguration#isTraceCollection field)
as it was only used to manage the three IME tracing options.

Simplify the proxy API, merging the three endpoints
(ime_trace_clients, ime_trace_service, ime_trace_managerservice)
into a single "ime" endpoint.

Bump proxy version to 2.0.0

Bug: 276433199
Test: capture IME traces with winscope
Change-Id: Ib7928839634a6a89ad09f80f1a7450d3e167be64
8 files changed