Added Irt-related tables; switched to version 880 (#156)

### Briefly, what does this PR introduce?
Added IrtRadiatorInfo / IrtParticle / IrtEvent tables; version 880

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

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

---------

Co-authored-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>

Author: alexander-kiselev

CMakeLists.txt

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

edm4eic.yaml

@@ -9,7 +9,7 @@
 ## If there are schema version changes that can be evolved, see the podio documentation
 ## for an example: https://github.com/AIDASoft/podio/tree/master/tests/schema_evolution
 ##
-schema_version: 870
+schema_version: 880
 
 options :
   # should getters / setters be prefixed with get / set?
@@ -378,6 +378,26 @@ datatypes:
     OneToManyRelations:
       - edm4eic::MCRecoTrackerHitAssociation   rawHitAssociations // raw sensor hits, associated with MC hits
 
+  edm4eic::IrtRadiatorInfo:
+    Description: "IRT 2.1 output (radiator level)"
+    Author: "A. Kiselev"
+    Members:
+      - uint16_t          npe               // Detected photoelectron count
+      - uint16_t          nhits             // Hit count associated with this radiator by IRT engine
+      - float             angle             // Reconstructed Cherenkov angle
+      
+  edm4eic::IrtParticle:
+    Description: "IRT 2.1 output (track level)"
+    Author: "A. Kiselev"
+    Members:
+      - int32_t           PDG               // Reconstructed most probable PDG code
+      - uint16_t          npe               // Detected photoelectron count
+      - uint16_t          nhits             // Hit count associated with this particle by IRT engine
+    OneToOneRelations:
+      - edm4eic::Track                         track      // charged particle track
+    OneToManyRelations:
+      - edm4eic::IrtRadiatorInfo               radiators  // radiator-related information
+
   edm4eic::RingImage:
     ##@TODO: Juggler support; not used in EICrecon
     Description: "EIC Ring Image Cluster"