add groupedByClassification to user-stats posthog

Author: shaykeren

ide-common/src/main/kotlin/org/digma/intellij/plugin/posthog/ActivityMonitor.kt

@@ -450,6 +450,7 @@ class ActivityMonitor(private val project: Project) : Disposable {
                 "trace.depth.avg" to uss.traceDepthAvg,
                 "unique.spans.count" to uss.uniqueSpansCount,
                 "environments.count" to uss.environmentsCount,
+                "groupedByClassification" to uss.classificationAggregationString
             )
         )
     }

model/src/main/kotlin/org/digma/intellij/plugin/model/rest/user/UserUsageStatsResponse.kt

@@ -34,5 +34,8 @@ constructor(
     @JsonProperty("hasDistributedCalls")
     val hasDistributedCalls: Boolean = false
 
+    @JsonProperty("classificationAggregationString")
+    val classificationAggregationString: String= ""
+
     fun hasDbSpans() = uniqueDatabaseSpansCount > 0
 }