[Labeling] Write data structure labelers in labelers.py

[isabelgiang]

• [x] Vectors
• [x] Hash Maps/Tables
• [x] Sets
• [ ] Arrays
• [x] Stacks
• [x] Queues
• [x] Priority Queues
• [x] Linked List
• [ ] Heaps
• [ ] Trees
• [ ] Graphs

[jesrun]

Updated labelers.py in the labeler branch