Updating ActsTrk SeedingTool, updating ActsTrk::SiSpacePointsSeedMaker

This MR contains the following changes to the ActsTrk seeding tools and algorithms:

• ISeedingTool

1. use std::vector<const ActsTrk::SpacePoint*> instead of SpacePointContainer in createSeed method.

• SeedingTool

1. use of beam spot position to correct sp global position
2. update to match updates of ISeedingTool

• SeedingFromAthenaAlgorithm

1. update to match updates of ISeedingTool

• SeedingAlgorithm

1. update to match updates of ISeedingTool

• SiSpacePointsSeedMaker

1. enable possibility to decide if converting InDet::PixelSpacePoint and InDet::SCT_SpacePoint to ActsTrk::SpacePoint or using an existing ActsTrk::SpacePointContainer
2. update to match updates of ISeedingTool
3. additional code improvements

FYI: @cvarni @pagessin @toyamaza @tbold @tadej @npetters