InDetAlignGenTools+InDetAlignToolInterfaces: cmake fixes

Define an interface library for exported headers.

Library dependency fixes.

This merge request affects 2 packages:

• InnerDetector/InDetAlignTools/InDetAlignGenTools
• InnerDetector/InDetAlignTools/InDetAlignToolInterfaces

Adding @goetz ,@sroe as watchers

added InnerDetector master review-pending-level-1 labels

CI Result FAILURE (hash 59f0f44e)

	Athena	AthSimulation	AnalysisBase	AthGeneration
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 17399]

The changes are fine and the CI issues are unrelated. Approving.

Jason (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 05a0b64e

added sweep:ignore label