add comments on entries

app/views/entries/_comment_form.html.erb

@@ -0,0 +1,12 @@
+<%= form_with(model: [entry, Comment.new(commentable: entry)],
+              data: { turbo_stream: true },
+              html: { class: "space-y-4" }) do |form| %>
+  <%= form.hidden_field :language_code, value: (local_assigns[:language_code].presence || nil) %>
+  <div>
+    <%= form.label :body, "Comment", class: "sr-only" %>
+    <%= form.text_area :body, rows: 4, class: "block w-full border-slate-300 rounded-md shadow-sm focus:ring-indigo-500 focus:border-indigo-500 sm:text-sm", placeholder: "Add your comment..." %>
+  </div>
+  <div class="flex justify-end">
+    <%= form.submit "Submit", class: "bg-indigo-600 text-white px-4 py-2 rounded-lg text-sm font-semibold hover:bg-indigo-700 transition cursor-pointer" %>
+  </div>
+<% end %>