Generate navigation and render page embeds from PocketBase

Elternbeirat.Web/Features/Embeds/PageEmbeds.razor

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+@* Renders the dynamic blocks a page opts into via its "embed" field, in the
+   given order. Unknown keys are ignored so a typo in PocketBase can never break
+   a page. Each block loads its own data. *@
+
+@foreach (var key in Embed)
+{
+    switch (key)
+    {
+        case "posts":
+            <PostsEmbed />
+            break;
+        case "events":
+            <EventsEmbed />
+            break;
+        case "faqs":
+            <FaqsEmbed />
+            break;
+    }
+}
+
+@code {
+    /// <summary>The page's embed keys ("posts", "events", "faqs"), in order.</summary>
+    [Parameter]
+    public IReadOnlyList<string> Embed { get; set; } = [];
+}