add generic convertQuery for extension

.gitignore

.gitlab-ci.yml

.vscode/launch.json

LICENSE

README.md

aql/convertQueryBenchmark_test.go

aql/convertQueryTestOutputs.go

aql/convertQuery_test.go

aql/mockConvertQuery.go

aql/queryConverter.go

aql/testInputs.go

cypher/convertQuery.go

cypher/convertQueryBenchmark_test.go

cypher/createConstraints.go

cypher/hierarchy.go

cypher/queryConverter.go

cypherv2/queryConverter.go

entity/fixIndices.go

entity/hierarchy.go

entity/hierarchyStruct.go