CG-10921: Dict Merging + Unwrap Fixes

[tawsifkamal]

• Merge python dicts or javascript objects together (both normal keys and spread operators)

• Dict.merge(**args: str | Dict) accepts args of str | Dict object

• Calling unwrap on a Dict object will unwrap all spread objects in the dictionary/object which are denoted as the Unpack object

• Dict.unpack -> Dict.unpacks solves the issue when there are multiple spreak operators so we capture all of them

• Raises error if duplicate keys are present in python. Also recursively travels up spread operators to find duplicate keys

Examples

# Python
dict1.merge(dict2, dict3)  # Multiple dicts
dict1.merge("{'a': 1, **base1}", "{'b': 2}")       # With spread operator and strings

# TypeScript
dict1.merge(dict2, dict3, "{x: 1}", "{y: 2}")      # Multiple objects
dict1.merge("{a: 1, ...base1}", "{b: 2}")          # With spread operator

To find the spread objects you must do the following to loop over everything. These apis were already existing btw

for child in dict1.children
     print(child) # this will include all of the keys and the unpacked