Add TOML config package

[roninjin10]

In order to make mocktimism easy to configure we want to offer a toml file configuration option

• [x] Add toml parsing with https://github.com/BurntSushi/toml
• [x] Add validation
• [x] Add tests
• [x] Document the toml

[roninjin10]

Mocktimism TOML Configuration

Global Configuration

[global] state = '/path/to/my/persisted-state' silent = false

L1 Chain Configuration

[L1] name = 'mainnet'

[[fork-config]] fork_chain_id = 1 fork_url = "https://mainnet.alchemy.infura" block_base_fee_per_gas = 420

[[environment]] block_base_fee_per_gas = 420 chain_id = 10 gas_limit = 420

[[evm]] accounts = 10 balance = 1000 steps-tracing = true

[[server]] allow-origin = "*" port = 8545 host = "127.0.0.1" block_time = 12 prune_history = false

L2 Chain Configuration

[L2] name = "L2_Chain_1"

[[fork-config]] fork_chain_id = 10 fork_url = "https://op.alchemy.infura" block_base_fee_per_gas = 420

[[environment]]

Optionally override the l1 or set it if not running an l1

l1_block_base_per_gas = 420 block_base_fee_per_gas = 420 chain_id = 10 gas_limit = 420

[[evm]] accounts = 10 balance = 1000 steps-tracing = true

[[server]] allow-origin = "*" port = 8546 host = "127.0.0.1" block_time = 2 prune_history = false