Add enum for -Infinity and NaN tests cases

[dubzn]

Description

Currently, we use felts for cases where the results of dividing amount_delta_0 and amount_delta_1 are border cases (0/0 or -x/0).

# file /tests/utils/swap_helper.cairo (line 178-190)

fn calculate_execution_price(
    token_0_swapped_amount: u256, token_1_swapped_amount: u256
) -> u256 {
    if token_0_swapped_amount == 0
        && token_1_swapped_amount == 0 { xxxxxxxxxxxxx
        'NaN'.into()
    } else if token_0_swapped_amount == 0 {
        // Since uniswap divides deltas to calculate exec_price, all prices are multiplied by -1 so that all prices are > 0.
        // Therefore, this value ends up as -Infinity
        '-Infinity'.into()
    } else { //this is every other case, price = 0/x = 0, or price = x/y = z
        (token_1_swapped_amount * pow(2, 96)) / token_0_swapped_amount
    }
}

We should change what this function returns, and the obtained value should be an enum ExecutionPriceEdgeCases.

The modifications should be made in the previously mentioned function and in the SwapExpectedResults files wherever 'NaN' and '-Infinity' are found.

Pool N°	Error type
Pool 8	NaN
Pool 9	NaN
Pool 10	-Infinity
Pool 11	NaN
Pool 12	-Infinity & NaN
Pool 14	NaN