Adding ability to add attachment points when editing augmented part

app/templates/admin/_augmented_part_attachment_points.html

@@ -0,0 +1,38 @@
+<div id="ap-{{ augmented_part_id }}-attachment-points" class="ap-inline-section">
+  <h3>Attachment Points</h3>
+
+  {% for apoint in attachment_points_list %}
+    {% include "admin/_augmented_part_ap_row.html" %}
+  {% else %}
+    <p class="muted" style="font-size:0.85rem;margin:0 0 0.5rem">No attachment points yet.</p>
+  {% endfor %}
+
+  <form hx-post="/admin/augmented-parts/{{ augmented_part_id }}/attachment-points"
+        hx-target="#ap-{{ augmented_part_id }}-attachment-points"
+        hx-swap="outerHTML"
+        class="inline-edit" style="margin-top:0.5rem">
+    <label>Name
+      <select name="attachment_point_name_id" required>
+        <option value="">— select —</option>
+        {% for apn in attachment_point_names %}
+          <option value="{{ apn.id }}">{{ apn.name }}</option>
+        {% endfor %}
+      </select>
+    </label>
+    <label>Type
+      <select name="connection_type" required
+              hx-get="/admin/attachment-points/connection-options"
+              hx-target="#ap-{{ augmented_part_id }}-add-connection-options"
+              hx-trigger="change"
+              hx-include="[name='connection_type']">
+        <option value="">— type —</option>
+        <option value="iso_thread">ISO Thread</option>
+        <option value="unc_thread">UNC Thread</option>
+        <option value="clamp_connection">Clamp Connection</option>
+        <option value="static_connection">Static Connection</option>
+      </select>
+    </label>
+    <div id="ap-{{ augmented_part_id }}-add-connection-options"></div>
+    <button type="submit" class="btn btn-primary">Add</button>
+  </form>
+</div>