DictNew

[cicr99]

Initializes a new dictionary (not default) and stores its pointer, using a global dictionary manager.

Reference: https://github.com/starkware-libs/cairo-lang/blob/efa9648f57568aad8f8a13fbf027d2de7c63c2c0/src/starkware/cairo/common/dict.cairo#L9

Depends on #245 for the use of globals()