Added Set handling to GremlinLang (#2705) #6437

Job	Run time
smoke	3m 16s
gremlin-server unified	13m 47s
cache gremlin-server docker image	2m 2s
gremlin-server default	13m 58s
gremlin-console	10m 30s
mvn clean install - jdk11	15m 20s
mvn clean install - jdk17	11m 8s
mvn clean install - jdk8	11m 27s
neo4j-gremlin	9m 5s
spark core (ubuntu-latest)	12m 0s
spark gryo (ubuntu-latest)	9m 41s
spark core (windows-latest)	3m 35s
spark gryo (windows-latest)	3m 35s
javascript (ubuntu-latest)	3m 29s
go	3m 22s
.NET	2m 4s
gremlin-driver	3m 14s
python	1m 50s
	2h 13m 23s

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