Add tutorial for paying transaction fees with different tokens (#966)

* Add tutorial for paying transaction fees with different tokens

* fix: llms

* Remove tutorial and code snippets for paying transaction fees with different tokens

* fix: llms

* Update tutorial for sending transactions with alternative fee payment token and adjust navigation link

* Enhance tutorial for sending transactions with alternative fee payment token by adding TypeScript module configuration step

* fix: llms

* Refine tutorial for sending transactions with alternative fee payment token by clarifying implementation steps and enhancing readability

* fix: llms

* Refine tutorial title for sending transactions with alternative fee payment token to improve clarity

* Apply suggestions from code review

Co-authored-by: Taylor Lucero <[email protected]>

* fix: llms

* Apply suggestions from code review

Co-authored-by: Taylor Lucero <[email protected]>

* fix: title

* fix: llms

---------

Co-authored-by: Taylor Lucero <[email protected]>

Author: nhussein11

.snippets/code/tutorials/polkadot-sdk/parachains/system-chains/asset-hub/send-tx-paying-fees-with-different-tokens/fee-payment-transaction-output.html

@@ -0,0 +1,16 @@
+<div id="termynal" data-termynal>
+  <span data-ty="input"><span class="file-path"></span>npx ts-node fee-payment-transaction.ts</span>
+  <pre>
+Tx finalized: 0x771956fdf40b3741bdc3c1e981a6daacbe5521877ad1915542e7413bb4a820bc (ok=true)
+Block: #9645060 0x57710514f168b5c444c8e47b1e1a31dd9e7bc7e9a51d8d25ccdbc6053e159f6b [tx index 2]
+Events:
+- Assets
+- Balances
+- Assets
+- AssetConversion
+- Balances
+- Balances
+- AssetTxPayment
+- System
+</pre>
+</div>

.snippets/code/tutorials/polkadot-sdk/parachains/system-chains/asset-hub/send-tx-paying-fees-with-different-tokens/fee-payment-transaction.ts

@@ -0,0 +1,69 @@
+import { sr25519CreateDerive } from "@polkadot-labs/hdkd";
+import {
+  DEV_PHRASE,
+  entropyToMiniSecret,
+  mnemonicToEntropy,
+} from "@polkadot-labs/hdkd-helpers";
+import { getPolkadotSigner } from "polkadot-api/signer";
+import { createClient } from "polkadot-api";
+import { assetHub } from "@polkadot-api/descriptors";
+import { withPolkadotSdkCompat } from "polkadot-api/polkadot-sdk-compat";
+import { getWsProvider } from "polkadot-api/ws-provider/node";
+import { MultiAddress } from "@polkadot-api/descriptors";
+
+const TARGET_ADDRESS = "14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3"; // Bob's address
+const TRANSFER_AMOUNT = 3_000_000_000n; // 3 DOT
+const USD_ASSET_ID = 1337;
+
+const createSigner = async () => {
+  const entropy = mnemonicToEntropy(DEV_PHRASE);
+  const miniSecret = entropyToMiniSecret(entropy);
+  const derive = sr25519CreateDerive(miniSecret);
+  const hdkdKeyPair = derive("//Alice");
+  const polkadotSigner = getPolkadotSigner(
+    hdkdKeyPair.publicKey,
+    "Sr25519",
+    hdkdKeyPair.sign
+  );
+  return polkadotSigner;
+};
+
+const client = createClient(
+  withPolkadotSdkCompat(
+    getWsProvider("ws://localhost:8000") // Chopsticks Asset Hub
+  )
+);
+
+const api = client.getTypedApi(assetHub);
+
+const tx = api.tx.Balances.transfer_keep_alive({
+  dest: MultiAddress.Id(TARGET_ADDRESS),
+  value: BigInt(TRANSFER_AMOUNT),
+});
+
+const signer = await createSigner();
+
+const result = await tx.signAndSubmit(signer, {
+  asset: {
+    parents: 0,
+    interior: {
+      type: "X2",
+      value: [
+        { type: "PalletInstance", value: 50 },
+        { type: "GeneralIndex", value: BigInt(USD_ASSET_ID) },
+      ],
+    },
+  },
+});
+
+const { txHash, ok, block, events } = result;
+console.log(`Tx finalized: ${txHash} (ok=${ok})`);
+console.log(`Block: #${block.number} ${block.hash} [tx index ${block.index}]`);
+
+console.log("Events:");
+for (const ev of events) {
+  const type = (ev as any).type ?? "unknown";
+  console.log(`- ${type}`);
+}
+
+process.exit(0);