Firestore sink for UC1 Beam

Fix #347 (closed)

theodolite-benchmarks/uc1-beam-flink/src/main/resources/META-INF/application.properties

 application.name=theodolite-uc1-application
 application.version=0.0.1
 
+sink.type=logger
+
 kafka.bootstrap.servers=localhost:9092
 kafka.input.topic=input
 kafka.output.topic=output
@@ -13,4 +15,4 @@ cache.max.bytes.buffering=-1
 
 specific.avro.reader=True
 enable.auto.commit.config=True
-auto.offset.reset.config=earliest
\ No newline at end of file
+auto.offset.reset.config=earliest