Merge branch 'Frontend-Merge' into develop

aql/convertQuery.go

aql/convertQuery_test.go

aql/fixIndices.go

aql/hierarchy.go

aql/hierarchy_test.go

aql/mockConvertQuery.go

cypher/convertQuery.go

cypher/convertQueryBenchmark_test.go

cypher/convertQuery_test.go

cypher/createConstraints.go

entity/entitycypher/queryStructCypher.go

entity/hierarchyStruct.go

entity/queryStruct.go

entity/queryStructValidator.go

interface.go

main/main.go

realtest.json

test.json

test2.json

test3.json