Using upcasts for more efficient multiplications.

[orizi]

Stack:

• Added implementation for i128 mul. #3625
• Added Neg operator for i*. #3624
• Added cast for signed integers. #3623
• Added i*_diff and Ord. #3622
• Added i*_mul op. #3621
• Added add and sub for i*. #3620
• Added support for including minus in literals. #3619
• Added impl for i*_try_from_felt252. #3618
• Separated python hint prints for addresses and non-addresses types. #3617
• Using upcasts for more efficient multiplications. #3616 ⬅

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

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This change is 

[yuvalsw]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @orizi)