[Housekeeping] Bump Phoenix LiveView to 1.0.0 (#495)

* bumped liveview to 1.0.0

* Converted interpolation to new syntax

lib/pinchflat_web/components/layouts/app.html.heex

@@ -6,7 +6,7 @@
     <main>
       <div class="mx-auto max-w-screen-2xl p-4 md:p-6 2xl:p-10">
         <.flash_group flash={@flash} />
-        <%= @inner_content %>
+        {@inner_content}
       </div>
     </main>
   </div>