Function execute_generic_call 

pub async fn execute_generic_call(
    quantus_client: &QuantusClient,
    pallet: &str,
    call: &str,
    args: Vec<Value>,
    from_keypair: &QuantumKeyPair,
    tip: Option<String>,
    finalized: bool,
) -> Result<H256>

Execute a generic call to any pallet