Modernize SimComponents
- use Gaudi::Functional
- use Gaudi::Accumulators
- use DataObjectHandle
- prefer ToolHandle
- prefer Gaudi::Algorithm
- amalgamate headers into implementation files
- use monadic StatusCode functionality
Reference update: Brunel!943 (merged) Goes together with Rec!1858 (merged) Brunel!943 (merged) Moore!354 (merged)
Edited by Gerhard Raven