Add a CLI tool to deploy the contracts using Foundry

[bpierre]

WIP

This relies on Foundry rather than Hardhat like #83 did.

• Port utils/deploymentDev.js to a Foundry script
• Add a CLI tool to deploy the contracts (./deploy)
• Add a GitHub action that:
  • Deploys the contracts to Tenderly
  • Deploys the app on Vercel (carrying the env vars from deploying the contracts) (will be done in another PR)

deploy can be launched with --help to see its documentation:

$ ./deploy --help

deploy - deploy the Liquity contracts.

Usage:
  ./deploy [NETWORK_PRESET] [OPTIONS]

Arguments:
  NETWORK_PRESET  A network preset, which is a shorthand for setting certain options
                  such as the chain ID and RPC URL. Options take precedence over
                  network presets. Available presets:
                  - local: Deploy to a local network
                  - mainnet: Deploy to the Ethereum mainnet
                  - tenderly-devnet: Deploy to a Tenderly devnet


Options:
  --chain-id <CHAIN_ID>                    Chain ID to deploy to.
  --deployer <DEPLOYER>                    Address or private key to deploy with.
                                           Requires a Ledger if an address is used.
  --ledger-path <LEDGER_PATH>              HD path to use with the Ledger (only used
                                           when DEPLOYER is an address).
  --etherscan-api-key <ETHERSCAN_API_KEY>  Etherscan API key to verify the contracts
                                           (mainnet only).
  --help, -h                               Show this help message.
  --open-demo-troves                       Open demo troves after deployment (local
                                           only).
  --rpc-url <RPC_URL>                      RPC URL to use.
  --verify                                 Verify contracts on Etherscan after
                                           deployment (requires ETHERSCAN_API_KEY).

Note: options can also be set via corresponding environment variables,
e.g. --chain-id can be set via CHAIN_ID instead. Parameters take precedence over
variables.

[bpierre]

I will move this part in another script before merging the PR, to separate deployment from demo data.

[danielattilasimon]

Looks all good to me! 👍 👍

I've added some changes on top of the branch to automatically deploy to our testnet, can you give those a look before we merge this? Thanks 🙏

[bpierre]

🔥 🔥 🔥