refactor(jump-processing): simplifies the jump encoding! much better

[Alexangelj]

Description

• Changes jump encoding to be much more simple. All instructions have their respective length's added in front of the instruction data, which is then serialized as a single bytes array via bytes().concat. Decoding requires an accumulator, which we call the "pointer" to sum the starting index with the length of the next instruction to get to the next index that holds the next next instruction's length data.
• Adds a jump decoding function to make it easier to decode!