SDK: Add helper to metapackage to construct ChainContext (#513)

Author: barnjamin

examples/src/platform.ts

@@ -0,0 +1,19 @@
+import { blindDeserializePayload, loadProtocols } from "@wormhole-foundation/sdk";
+import evm from "@wormhole-foundation/sdk/platforms/evm";
+
+(async function () {
+  await loadProtocols(evm, ["TokenBridge", "WormholeCore"]);
+
+  const platform = new evm.Platform("Mainnet");
+  const ethereum = platform.getChain("Ethereum");
+  const core = await ethereum.getWormholeCore();
+  const [msg] = await core.parseMessages(
+    "0xee0faa8eaf0f0acf7c6835f35fd4e58fb57d74a3f6dcf4067acc02aca1dd3916",
+  );
+  console.log(blindDeserializePayload(msg!.payload));
+
+  const sepolia = evm.getChain("Testnet", "Sepolia");
+  const tb = await sepolia.getTokenBridge();
+  const address = await tb.getWrappedNative();
+  console.log(address.toString());
+})();