feat: handling of cairo u512 type

[PhilippeR26]

Motivation and Resolution

The new u512 Cairo type is now implemented.
Solve issue #1013.
According to https://github.com/starkware-libs/cairo/blob/07484c52791b76abcc18fd86265756904557d0d2/corelib/src/test/integer_test.cairo#L767

The raw format is :

{
    limb0: u128, // lower weight
    limb1: u128,
    limb2: u128,
    limb3: u128, // upper weight
};

Usage related changes

User send a BigNumberish, and receive a bigint.

await myContract0.my_function(553844998243714947043252949842317834769n);
await myContract1.my_function(cairo.uint512("0xa9d2d1501ad0a2eb5337a9d2d1501ad0a2eb5337a9d2d1501ad0a2eb5337a9d2d1501ad0a2eb5337a9d2d1501ad0a2eb5337")); 
await myContract2.my_function(12345678, '13456789765', '0xe23a40b543f', 1534566734334n);

const a2: Uint512 = {
  limb0: "0xeb5337d9a885be310x9365205a414fdd",
  limb1: "0x1fd465baff2ba9d2d1501ad0a2eb5337",
  limb2: "0x05f7cd1fd465baff2ba9d2d1501ad0a2",
  limb3: "0x2eb5337d9a885be319366b5205a414fd"
};

Development related changes

A new file is in utils/cairoDataTypes, inspired from the Cairo u256 type.

Checklist:

• Performed a self-review of the code
• Rebased to the last commit of the target branch (or merged it into my branch)
• Linked the issues which this PR resolves
• Documented the changes in code (API docs will be generated automatically)
• Updated the tests
• All tests are passing

[PhilippeR26]

@haroune-mohammedi

For u512, Starknet.js is waiting a Bignumberish.

[tabaktoni]

Look like there is some issue on validate ?

[PhilippeR26]

Look like there is some issue on validate ?

Problem from pr #1007

Solved.

[tabaktoni]

LGTM!

[haroune-mohammedi]

@haroune-mohammedi

For u512, Starknet.js is waiting a Bignumberish.

Will be addressed here keep-starknet-strange/abi-wan-kanabi#68