feat: Mostly working user view with elementary html.

Sources/App/Views/Buttons.swift

@@ -7,3 +7,14 @@ struct ToggleFormButton: HTML {
     }
   }
 }
+
+enum Button {
+
+  static func danger<C: HTML>(@HTMLBuilder body: () -> C) -> some HTML<HTMLTag.button> {
+    button(.class("danger")) { body() }
+  }
+
+  static func close(id: String) -> some HTML<HTMLTag.button> {
+    button(.class("btn-add"), .on(.click, "toggleContent('\(id)')")) { "x" }
+  }
+}