Onchain CLI

Add Base testnet chain definition

We’re excited to add Base, an Ethereum Layer 2 (L2) network offering a secure, low-cost, developer-friendly way for anyone, anywhere, to build decentralized apps onchain. Our goal with Base is to make onchain the next online and onboard 1B+ users into the cryptoeconomy. In pursuit of this goal, B

Incorrect TL-B scheme in TEP-64

Compiling a TL-B scheme from TEP-64 using the standard tools ([tlbc](https://github.com/ton-blockchain/ton/blob/master/crypto/tl/tlbc.cpp)) results in an error: ``` test.tlb:1:23: error: variable `bn` used before being assigned to tail#_ {bn:#} b:(bits bn) = SnakeData ~0; ``` <details><

web3 -> onchain

Onchain is the next online.

feat(forge): Solidity Scripting

## Motivation We should allow for scripting in solidity. This can be used for deployment as well as generic onchain state mutating interaction. Closes https://github.com/foundry-rs/foundry/issues/402 ## Solution Create `broadcast`, `startBroadcast`, and `stopBroadcast` cheatcodes. This tell

Contract standard for cross L2-calls

Specifies a standard for requesting cross-L2 calls and paying reward fulfillment based entirely on onchain info. Please comment on PR or comment on the [Ethereum Magician discussions](https://ethereum-magicians.org/t/rip-7755-contract-standard-for-cross-l2-calls-facilitation).