Use exp as a prefix for all saved files

theodolite/src/main/kotlin/theodolite/execution/TheodoliteExecutor.kt

@@ -115,10 +115,10 @@ class TheodoliteExecutor(
         val ioHandler = IOHandler()
         val resultsFolder = ioHandler.getResultFolderURL()
         this.config.executionId = getAndIncrementExecutionID(resultsFolder + "expID.txt")
-        ioHandler.writeToJSONFile(this.config, "$resultsFolder${this.config.executionId}-execution-configuration")
+        ioHandler.writeToJSONFile(this.config, "${resultsFolder}exp${this.config.executionId}-execution-configuration")
         ioHandler.writeToJSONFile(
             kubernetesBenchmark,
-            "$resultsFolder${this.config.executionId}-benchmark-configuration"
+            "${resultsFolder}exp${this.config.executionId}-benchmark-configuration"
         )
 
         val config = buildConfig()
@@ -130,7 +130,7 @@ class TheodoliteExecutor(
         }
         ioHandler.writeToJSONFile(
             config.compositeStrategy.benchmarkExecutor.results,
-            "$resultsFolder${this.config.executionId}-result"
+            "${resultsFolder}exp${this.config.executionId}-result"
         )
     }