feat: add quality field to TrackSeed (#141)

### Briefly, what does this PR introduce?
This PR adds a quality field to TrackSeed, intended to be filled with
e.g.
https://github.com/acts-project/acts/blob/v44.4.0/Core/include/Acts/EventData/Seed.hpp#L34.

### What kind of change does this PR introduce?
- [ ] Bug fix (issue #__)
- [x] New feature (issue #__)
- [ ] Documentation update
- [ ] Other: __

### Please check if this PR fulfills the following:
- [ ] Tests for the changes have been added
- [ ] Documentation has been added / updated
- [ ] Changes have been communicated to collaborators

### Does this PR introduce breaking changes? What changes might users
need to make to their code?
No.

### Does this PR change default behavior?
No.

Author: wdconinc

CMakeLists.txt

@@ -7,7 +7,7 @@ project(EDM4EIC
   LANGUAGES CXX)
 
 SET( ${PROJECT_NAME}_VERSION_MAJOR 8 )
-SET( ${PROJECT_NAME}_VERSION_MINOR 5 )
+SET( ${PROJECT_NAME}_VERSION_MINOR 6 )
 SET( ${PROJECT_NAME}_VERSION_PATCH 0 )
 SET( ${PROJECT_NAME}_VERSION  "${${PROJECT_NAME}_VERSION_MAJOR}.${${PROJECT_NAME}_VERSION_MINOR}.${${PROJECT_NAME}_VERSION_PATCH}" )
 

edm4eic.yaml

@@ -430,6 +430,7 @@ datatypes:
     Author: "S. Li, B. Schmookler, J. Osborn"
     Members:
       - edm4hep::Vector3f         perigee   // Vector for the perigee (line surface)
+      - float                     quality   // Seed quality reported by finder
     OneToManyRelations:
       - edm4eic::TrackerHit       hits      // Tracker hits triplet for seeding
     OneToOneRelations: