Epic: core contracts have sufficient deploy tooling

[tkporter]

Deployment tooling to unblock agent development:

• https://github.com/hyperlane-xyz/fuel-contracts/issues/63

Misc:

• https://github.com/hyperlane-xyz/fuel-contracts/issues/59

Deployment tooling:

• https://github.com/hyperlane-xyz/fuel-contracts/issues/61
• https://github.com/hyperlane-xyz/fuel-contracts/issues/60