feat: Added register-account command to cli (#2980)

This PR adds the PXE's register-account command to the cli.

# Checklist:
Remove the checklist to signal you've completed it. Enable auto-merge if
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- [ ] If the pull request requires a cryptography review (e.g.
cryptographic algorithm implementations) I have added the 'crypto' tag.
- [ ] I have reviewed my diff in github, line by line and removed
unexpected formatting changes, testing logs, or commented-out code.
- [ ] Every change is related to the PR description.
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this pull request to relevant issues (if any exist).

yarn-project/cli/src/index.ts

@@ -185,6 +185,30 @@ export function getProgram(log: LogFn, debugLogger: DebugLogger): Command {
       log(`Partial address: ${partialAddress.toString()}`);
     });
 
+  program
+    .command('register-account')
+    .description(
+      'Registers an aztec account that can be used for sending transactions. Registers the account on the PXE. Uses a Schnorr single-key account which uses the same key for encryption and authentication (not secure for production usage).',
+    )
+    .summary('Registers an aztec account that can be used for sending transactions.')
+    .addOption(createPrivateKeyOption('Private key for note encryption and transaction signing.', true))
+    .requiredOption(
+      '-pa, --partial-address <partialAddress>',
+      'The partially computed address of the account contract.',
+      parsePartialAddress,
+    )
+    .addOption(pxeOption)
+    .action(async ({ rpcUrl, privateKey, partialAddress }) => {
+      const client = await createCompatibleClient(rpcUrl, debugLogger);
+
+      const { address, publicKey } = await client.registerAccount(privateKey, partialAddress);
+
+      log(`\nRegistered account:\n`);
+      log(`Address:         ${address.toString()}`);
+      log(`Public key:      ${publicKey.toString()}`);
+      log(`Partial address: ${partialAddress.toString()}`);
+    });
+
   program
     .command('deploy')
     .description('Deploys a compiled Aztec.nr contract to Aztec.')