Retrieve positions of pool

/// To fetch all positions in the pools using pagination.
/// Params
///     - pool: The CLMM pool.
///     - start: Utilizes a vector to represent the range of options.
///     - limit: Specifies the maximum number of positions to fetch.
/// Returns
///     - `vector<PositionIngo>` Position info array.
public fun fetch_positions(
    pool: &Pool<CoinTypeA, CoinTypeB>, start: vector<ID>, limit: u64
): vector<PositionInfo> {
    ///
}