integrations/viem: initial package work

[CedarMist]

Ideas:

• Remove ethers dependency from cipher.ts
  • Share cipher.ts between multiple packages (so, this remains in the core?)
• Add a integrations/ethers package
• Share tsconfig between the packages

TODO:

• Add examples/viem
• Add examples/wagmi

[aefhm]

May not be using Viem right. I get a deploy error.

TransactionExecutionError: The method does not exist / is not available.
...
Details: the method eth_sendTransaction does not exist/is not available
Version: viem@2.6.1
    at getTransactionError (file:///Users/xi/oasis/sapphire-paratime/node_modules/.pnpm/viem@2.6.1_typescript@5.3.3/node_modules/viem/_esm/utils/errors/getTransactionError.js:11:12)
    at sendTransaction (file:///Users/xi/oasis/sapphire-paratime/node_modules/.pnpm/viem@2.6.1_typescript@5.3.3/node_modules/viem/_esm/actions/wallet/sendTransaction.js:123:15)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async main (file:///Users/xi/oasis/sapphire-paratime/examples/viem/build/examples/viem/src/index.js:38:18)
    at async file:///Users/xi/oasis/sapphire-paratime/examples/viem/build/examples/viem/src/index.js:73:1 {
  details: 'the method eth_sendTransaction does not exist/is not available',
  docsPath: undefined,
  metaMessages: [
    'URL: http://127.0.0.1:8545',
    'Request body: {"method":"eth_sendTransaction","params":[{"data":"...","from":"0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"}]}',
    ' ',
    'Request Arguments:',
    '  chain:  Oasis Sapphire Testnet (id: 23293)\n' +
      '  from:   0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266\n' +
      '  data:  ...'
  ],
  shortMessage: 'The method does not exist / is not available.',
  version: 'viem@2.6.1',
  cause: MethodNotFoundRpcError: The method does not exist / is not available.
  
  URL: http://127.0.0.1:8545

[aefhm]

Closing in favor of #303.