Add trx example (#190)

* add TRX example

* update with kilnAccountId

* use wallet address from fireblocks

examples/trx.ts

@@ -0,0 +1,87 @@
+import { atomToUatom, Kiln, KILN_VALIDATORS, trxToSun } from '../src/kiln.ts';
+import type { FireblocksIntegration } from '../src/fireblocks.ts';
+import { loadEnv } from './env.ts';
+
+const { kilnApiKey, kilnAccountId, kilnApiUrl, fireblocksApiKey, fireblocksApiSecret, fireblocksVaultId } =
+  await loadEnv();
+
+const k = new Kiln({
+  baseUrl: kilnApiUrl,
+  apiToken: kilnApiKey,
+});
+
+const vault: FireblocksIntegration = {
+  config: {
+    apiKey: fireblocksApiKey,
+    secretKey: fireblocksApiSecret,
+    basePath: 'https://api.fireblocks.io/v1',
+  },
+  vaultId: fireblocksVaultId,
+};
+
+//
+// Get the wallet address from Fireblocks
+//
+const fireblocksWallet = (
+  await k.fireblocks.getSdk(vault).vaults.getVaultAccountAssetAddressesPaginated({
+    vaultAccountId: vault.vaultId,
+    assetId: 'TRX',
+    limit: 1,
+  })
+).data.addresses?.[0].address;
+
+if (!fireblocksWallet) {
+  console.log('Failed to get fireblocks wallet');
+  process.exit(0);
+}
+
+//
+// Craft the transaction
+//
+console.log('Crafting transaction...');
+const txRequest = await k.client.POST('/trx/transaction/stake', {
+  body: {
+    account_id: kilnAccountId,
+    owner_address: fireblocksWallet,
+    amount_sun: Number(trxToSun('1')),
+    resource: 'BANDWIDTH',
+  },
+});
+if (txRequest.error) {
+  console.log('Failed to craft transaction:', txRequest);
+  process.exit(1);
+} else {
+  console.log('Crafted transaction:', txRequest.data);
+}
+console.log('\n\n\n');
+
+//
+// Sign the transaction
+//
+console.log('Signing transaction...');
+const signRequest = await (async () => {
+  try {
+    return await k.fireblocks.signTrxTx(vault, txRequest.data.data);
+  } catch (err) {
+    console.log('Failed to sign transaction:', err);
+    process.exit(1);
+  }
+})();
+console.log('Signed transaction:', signRequest);
+console.log('\n\n\n');
+
+//
+// Broadcast the transaction
+//
+console.log('Broadcasting transaction...');
+const broadcastedRequest = await k.client.POST('/trx/transaction/broadcast', {
+  body: {
+    tx_serialized: signRequest.signed_tx.data.signed_tx_serialized,
+  },
+});
+if (broadcastedRequest.error) {
+  console.log('Failed to broadcast transaction:', broadcastedRequest);
+  process.exit(1);
+} else {
+  console.log('Broadcasted transaction:', broadcastedRequest.data);
+}