Update EtaCorrection

Now works for all detectors. Put before tracking, works on clusters only. Does not calculate distribution anymore.

Open question: Where do we want the eta distribution to be calculated? Since the actual correction has to be done before tracking, but calculating the distribution requires tracks, this is not possible in the same algorithm. Options:

• Add new algorithm EtaCalculation
• Add to existing algorithm - but which?

src/algorithms/EtaCalculation/CMakeLists.txt

+# Define module and return the generated name as ALGORITHM_NAME
+CORRYVRECKAN_ALGORITHM(ALGORITHM_NAME)
+
+# Add source files to library
+CORRYVRECKAN_ALGORITHM_SOURCES(${ALGORITHM_NAME}
+    EtaCalculation.cpp
+)
+
+# Provide standard install target
+CORRYVRECKAN_ALGORITHM_INSTALL(${ALGORITHM_NAME})