code: basic create view and HX-Header integration (first htmx)

templates/admin/items/item_create.jinja

@@ -1,4 +1,4 @@
-{% extends "admin/base.jinja" %}
+{% extends base|none("admin/base.jinja") %}
 
 {% macro input(name, value="", type="text") -%}
 <input type="{{ type }}" name="{{ name }}" value="{{ value }}">
@@ -7,7 +7,7 @@
 {% block content %}
 Create {{item_model.name}} in {{item_info.name}}
 
-<form>
+<form action="{{item_model.add_url}}" method="POST">
     {% set fields = item_info.display_list %}
     {% for field in fields %}
     <p><label>{{field}}</label>{{ input(field) }}</p>