Add a nice UI for the dummy Relying Party (#24)

# Motivation

Main motivation is to deploy the dummy relying party to mainnet so that
developers can get a grasp of the feature fast.

The idea is to link the RP in the dev docs for discoverability.

# Changes

* Add mainnet network to dfx.json.
* Bumped the II version used.
* Install tailwind to dummy-relying-party and use it in index.html to
build a nice UI.
* Change the dom manipulation of the JS file to be adapted to the new UI
and offer a nice UX.

# Tests

Relying party can be test here:
https://l7rua-raaaa-aaaap-ahh6a-cai.icp0.io/

# Todos

- [ ] Add entry to changelog (if necessary). Not necessary. No new
functionality is added to the SDK.

dfx.json

@@ -19,8 +19,19 @@
     },
     "internet_identity": {
       "type": "custom",
-      "wasm": "https://github.com/dfinity/internet-identity/releases/download/release-2024-04-05/internet_identity_dev.wasm.gz",
-      "candid": "https://github.com/dfinity/internet-identity/releases/download/release-2024-04-05/internet_identity.did"
+      "wasm": "https://github.com/dfinity/internet-identity/releases/download/release-2024-06-07/internet_identity_dev.wasm.gz",
+      "candid": "https://github.com/dfinity/internet-identity/releases/download/release-2024-06-07/internet_identity.did",
+      "remote": {
+        "id": {
+          "ic": "rdmx6-jaaaa-aaaaa-aaadq-cai"
+        }
+      }
+    }
+  },
+  "networks": {
+    "mainnet": {
+      "providers": ["https://icp0.io"],
+      "type": "persistent"
     }
   }
 }

dummy-e2e/src/vc-flow.spec.ts

@@ -28,7 +28,7 @@ test("user gets credential from dummy issuer within the dummy relying party", as
 
   await page.getByTestId("credential-type-input").fill("Test");
 
-  await expect(await page.getByTestId("vc-result").textContent()).toBe("-");
+  await expect(await page.getByTestId("vc-result").isVisible()).toBe(false);
 
   // Request credentials
   const iiPagePromise = context.waitForEvent("page");
@@ -40,5 +40,5 @@ test("user gets credential from dummy issuer within the dummy relying party", as
   await iiPage.waitForEvent("close");
   await expect(iiPage.isClosed()).toBe(true);
 
-  await expect(await page.getByTestId("vc-result").textContent()).not.toBe("-");
+  await expect(await page.getByTestId("vc-result").isVisible()).toBe(true);
 });