Reshuffled fields Script and Create transactions to unify part used by all chargeable transactions

[xgreenx]

Related specification change: FuelLabs/fuel-specs#562

This change is a preparation for a small refactoring to create a template for chargeable transactions. Any chargeable transaction should contain inputs and output for coins, policies to actually charge the user, and witnesses for verifying signatures and any arbitrary data.

The template will look like:

pub struct ChargeableTransaction<Body, MetadataBody> {
    pub(crate) body: Body,
    pub(crate) policies: Policies,
    pub(crate) inputs: Vec<Input>,
    pub(crate) outputs: Vec<Output>,
    pub(crate) witnesses: Vec<Witness>,
    #[cfg_attr(feature = "serde", serde(skip))]
    #[derivative(PartialEq = "ignore", Hash = "ignore")]
    #[canonical(skip)]
    pub(crate) metadata: Option<ChargeableMetadata<MetadataBody>>,
}

Where Body is a unique part related to the business logic of the transaction.

In the case of the Script it is:

pub struct ScriptBody {
    pub(crate) script_gas_limit: Word,
    pub(crate) receipts_root: Bytes32,
    #[derivative(Debug(format_with = "fmt_truncated_hex::<16>"))]
    pub(crate) script: Vec<u8>,
    #[derivative(Debug(format_with = "fmt_truncated_hex::<16>"))]
    pub(crate) script_data: Vec<u8>,
}

In the case of the Create it is:

pub struct CreateBody {
    pub(crate) bytecode_length: Word,
    pub(crate) bytecode_witness_index: u16,
    pub(crate) salt: Salt,
    pub(crate) storage_slots: Vec<StorageSlot>,
}

The base branch was changed.