ActionDescription was a horizontal layer of convenience functionality
covering (only) ex-AnalyzerBase based RunControl start scenarios
and gets in the way of target/tool orthogonalization.

So continue the path chosen with the removal of AnalyzerRunControl:
Remove ActionDescription by inlining into user code, then orthogonalize
tool-by-tool, then generalize again.

Change-Id: Ib597df3f4ad7b06bef06644458fa13ddca53afdb
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>