(FORK COMMIT) Add new metrics for insight into job size

Querying historical data will still require crazy complex workarounds, but this would make custom billing calculations more tractable in future

src/main/java/genepi/imputationserver/steps/InputValidation.java

@@ -287,10 +287,12 @@ private boolean checkVcfFiles(WorkflowContext context) {
 
 			// init counters
 			context.incCounter("samples", noSamples);
-			context.incCounter("genotypes", noSamples * noSnps);
-			context.incCounter("chromosomes", noSamples * chromosomes.size());
+			context.incCounter("genotypes", noSamples * noSnps);  // Legacy CG metric is convolution of two numbers
+			context.incCounter("just_genotypes", noSnps);
+			context.incCounter("chromosomes", noSamples * chromosomes.size()); // Legacy CG metric is convolution of two numbers
+			context.incCounter("just_chromosomes", chromosomes.size());
 			context.incCounter("chunks", chunks);
-			context.incCounter("chunk_samples", chunks * noSamples);
+			context.incCounter("chunk_samples", chunks * noSamples);  // Store calculation for convenience, since it's hard to query DB across rows
 			context.incCounter("runs", 1);
 			context.incCounter("refpanel_" + reference, 1);
 			context.incCounter("phasing_" + "eagle", 1);