feat: implement 0x93 - SWAP4 Opcode

[Eikix]

Kakarot v0 implementation: https://github.com/kkrt-labs/kakarot/blob/main/src/kakarot/instructions/exchange_operations.cairo
Kakarot v0 tests: https://github.com/kkrt-labs/kakarot/blob/44dabfcab05a87f85bcfe0a457809059d11d83fb/tests/src/kakarot/instructions/test_exchange_operations.cairo#L107

EELS Implementation: https://github.com/ethereum/execution-specs/blob/fade6e95726c9c0b47b779fd8873b5737fbea3b3/src/ethereum/paris/vm/instructions/stack.py#L108

Since	Group
Frontier	Exchange Operations

Index 1 is top of the stack. See PUSH.

Stack input

1. a: value to swap.
2. ignored value.
3. ignored value.
4. b: value to swap.

Stack output

1. b: swapped value.
2. ignored value.
3. ignored value.
4. a: swapped value.

Example

	Input	Output
1	1	2
2	0	0
3	0	0
4	2	1

Reproduce in playground.

Error cases

The state changes done by the current context are reverted in those cases:

• Not enough gas.
• Not enough values on the stack.

[Eikix]

Important update: we are gathering some bugs in the Kakarot v0 codebase, we need to make sure each issue and each PR in Kakarot-ssj is aware of the lists of known bugs. Look at this tracking issue everytime you take an issue and check your issue isn't targeted by a known bug.