Optimize IN list execution

Summary:
Use Unwind + ScanAllByLabelPropertyValue logical operator to
accelerate the execution of queries like the following one:
`MATCH (n:Label) WHERE n.property IN [] ...`

Reviewers: llugovic, mferencevic

Reviewed By: llugovic, mferencevic

Subscribers: llugovic, pullbot

Differential Revision: https://phabricator.memgraph.io/D2758

src/query/plan/operator.cpp

@@ -391,6 +391,9 @@ UniqueCursorPtr ScanAllByLabel::MakeCursor(utils::MemoryResource *mem) const {
       mem, output_symbol_, input_->MakeCursor(mem), std::move(vertices));
 }
 
+// TODO(buda): Implement ScanAllByLabelProperty operator to iterate over
+// vertices that have the label and some value for the given property.
+
 ScanAllByLabelPropertyRange::ScanAllByLabelPropertyRange(
     const std::shared_ptr<LogicalOperator> &input, Symbol output_symbol,
     storage::LabelId label, storage::PropertyId property,