docs(root): add sui custom tx script

examples/js/sui/custom-tx/.nvmrc

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+16.18.0

examples/js/sui/custom-tx/custom-tx.js

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+const BitGoJS = require('bitgo');
+const bitgo = new BitGoJS.BitGo({ env: 'test' });
+const coin = 'tsui';
+const basecoin = bitgo.coin(coin);
+
+// TODO: set your access token here
+const walletId = '<wallet-id>';
+const accessToken = '<access-token>';
+
+// TODO: set your passphrase here
+const walletPassphrase = '<wallet-passphrase>';
+
+// TODO: set tx hex here
+const base64TxHex = '<base64-tx-hex>';
+
+async function submitCustomTx() {
+  // (Optional) unlock if needed
+  bitgo.authenticateWithAccessToken({ accessToken: accessToken });
+  await bitgo.unlock({ otp: '000000', duration: 3600 });
+  const walletInstance = await basecoin.wallets().get({ id: walletId });
+
+  console.log('Wallet ID:', walletInstance.id());
+
+  const whitelistedParams = {
+    intent: {
+      intentType: 'customTx',
+      rawTx: base64TxHex,
+    },
+    apiVersion: 'full', // TODO: change to 'lite' for hot wallet
+  };
+
+  const unsignedTx = await bitgo
+    .post(bitgo.url('/wallet/' + walletId + '/txrequests', 2))
+    .send(whitelistedParams)
+    .result();
+
+  console.log('Unsigned Transaction:', JSON.stringify(unsignedTx, null, 4));
+
+  // TODO: uncomment below for hot wallet only
+  // sign tx
+  // const keychains = await basecoin.keychains().getKeysForSigning({ wallet: walletInstance });
+  // const signedTx = await walletInstance.signTransaction({
+  //   txPrebuild: unsignedTx,
+  //   keychain: keychains[0],
+  //   pubs: keychains.map((k) => k.pub),
+  //   reqId: unsignedTx.txRequestId,
+  //   walletPassphrase: walletPassphrase,
+  // });
+
+  // submit tx
+  // const submittedTx = await bitgo
+  //   .post(basecoin.url('/wallet/' + walletId + '/tx/send'))
+  //   .send({ txRequestId: signedTx.txRequestId })
+  //   .result();
+
+  // console.log('Submitted transaction:', JSON.stringify(submittedTx, null, 4));
+}
+
+submitCustomTx().catch((e) => console.error(e));

examples/js/sui/custom-tx/package.json

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+{
+  "name": "custom-tx",
+  "version": "1.0.0",
+  "description": "Examples to initiate SUI custom tx",
+  "main": "index.js",
+  "scripts": {
+    "customTx": "node custom-tx.js"
+  },
+  "author": "",
+  "license": "ISC",
+    "dependencies": {
+      "bitgo": "^19.18.0"
+  },
+  "devDependencies": {
+    "prettier": "^3.0.3"
+  }
+}