[TUTORIAL] Rewrite collection of SDK tutorials for Viem

[cpengilly]

Optimism SDK is now in maintenance mode and likely will be for a while (not shutting down the sdk yet), but we want to start sending developers to viem instead since it supports fault proofs. This means all the sdk tutorials will need to revised for viem:

• [TUTORIAL] update bridging eth with the sdk to use viem #591
• [TUTORIAL] update bridging erc-20 with the sdk to viem #592
• [TUTORIAL] update viewing deposits and withdrawals (with the sdk) to viem #593
• [TUTORIAL] tracing deposits and withdrawals (with the sdk) to viem #594
• [TUTORIAL] update estimating transaction costs (with the sdk) to viem #595
• [TUTORIAL] update using the optimism sdk (for chain operators) to viem #596
• [TUTORIAL] update communicating between chains in solidity (using the sdk) to viem #597

[cpengilly]

Just for future reference, a good viem example of doing a deposit is here: https://github.com/wevm/viem/blob/main/examples/op-stack_deposit/index.tsx
Viem has near 100% test coverage too so nearly all code examples can be copy pasted from viem

[cpengilly]

@smartcontracts checking in on how this might impact our integration testing, please advise 🙏🏾 💟