Track #1: Hint Processor

[drspacemn]

Utilize the cairo-vm custom hint processor to implement and execute the Starknet OS hints.

General Guidelines:

• use types from the cairo-vm/starknet-api where possible
• adhere as closely to the pythonic hint as possible
• note that vm_exit_scope() is implemented by the cairo-vm

Steps for implementing a new hint:

• check the hint has not been added to hints_raw.rs
• if not copy the text string from the compiled os and post in hints raw
• implement the hint functions in hints/mod.rs
• link the hint definition to the hint function in the sn_hint_processor

Testing hint:

• run the test script from the project root ./scripts/setup-tests.sh
• you will see the file build/os_debug.json for debugging the os hint run
• implement a unit test where applicable

[drspacemn]

moving away from large tickets