ci: enable dRICH benchmarks and run 3 fixed-eta tests

• enable the new dRICH benchmarks in CI pipelines
  • updated config.yml with a build job and a run benchmarks job
  • add --ci option to run_benchmark.rb to make sure final artifacts are in results/[SIMULATION_MODE]/
• run 3 fixed-eta tests
• style: "event generation" and evgen in run_benchmark.rb should refer to "simulation", not event generation

benchmarks/rich/config.yml

-rich_job_x:
+rich_compile:
+  stage: compile
+  extends: .compile_benchmark
+  script:
+    - cmake -S . -B build -DCMAKE_INSTALL_PREFIX=.local
+    - cmake --build build -j2
+    - cmake --install build
+
+drich_fixed_eta:
   extends: .rec_benchmark
-  timeout: 24 hours
+  timeout: 2 hours
   stage: run
+  needs: 
+    - rich_compile
   script:
-    - bash benchmarks/rich/forward_hadrons.sh
-
+    - |
+      for mode in fixedEtaIdeal fixedEtaMin fixedEtaMax ; do
+        ruby benchmarks/rich/run_benchmark.rb --ci -s $mode --num-events 50
+      done
 
+rich_collect:
+  stage: collect
+  needs:
+    - drich_fixed_eta
+  script:
+    - echo "Done collecting artifacts."