chore: add missing engine pages (#338)

src/app/engine/features/access-tokens/page.mdx

@@ -0,0 +1,39 @@
+import { Callout } from "@doc";
+import { createMetadata } from "@doc";
+
+export const metadata = createMetadata({
+	title: "Access Tokens | thirdweb Engine",
+	description: "Manage API access to your Engine instance.",
+});
+
+# Access Tokens
+
+Manage [API](engine/references/api) access to your Engine instance. Access tokens are valid until deleted.
+
+### Create an access token
+
+Grant API access to your Engine instance with long-lived access tokens.
+
+1. Navigate to the [thirdweb dashboard](https://thirdweb.com/dashboard/engine).
+1. Select **Access Tokens**.
+1. Select **Create Access Token**.
+
+Provide the header `Authorization: Bearer <access_token>` when calling the Engine API.
+
+<Callout title="An access token is only shown once!" variant="warning">
+
+Securely store access tokens and remove them if they are compromised.
+
+</Callout>
+
+### Delete an access token
+
+1. Navigate to the [thirdweb dashboard](https://thirdweb.com/dashboard/engine).
+1. Select **Access Tokens**.
+1. Next to an access token, select **... > Delete**.
+
+## FAQ
+
+#### How do I generate short-lived access tokens?
+
+Consider using [Keypair Authentication](/engine/features/keypair-authentication) (advanced feature).

src/app/engine/features/admins/page.mdx

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+import { Callout } from "@doc";
+import { createMetadata } from "@doc";
+
+export const metadata = createMetadata({
+	title: "Admins | thirdweb Engine",
+	description: "Manage dashboard access to your Engine instance.",
+});
+
+# Admins
+
+Manage [dashboard](https://thirdweb.com/dashboard/engine) access to your Engine instance.
+
+## Add an admin
+
+1. Navigate to the [Engine dashboard page](https://thirdweb.com/dashboard/engine).
+1. Select the **Permissions** tab.
+1. Under **Admins**, select **Add New Admin**.
+1. Provide the wallet address owned by the user to add.
+
+The user with this wallet address can now manage your Engine instance.
+
+## Remove an admin
+
+1. Navigate to the [Engine dashboard page](https://thirdweb.com/dashboard/engine).
+1. Select the **Permissions** tab.
+1. Next to an existing admin, select **... > Remove**.