empty_state component added

Author: olivierauverlot

sqlpage/templates/empty_state.handlebars

@@ -0,0 +1,25 @@
+<div class="empty">
+  {{#if status_code}}
+    <div class="empty-header">{{status_code}}</div>
+  {{else}}
+    {{#if icon}}
+      <div class="empty-icon">
+        <span>{{icon_img icon }}</span>
+      </div>
+    {{else}}
+      {{#if image}}
+        <div class="empty-img"><img src="{{image}}" height="128" alt="{{image}}"/></div>
+      {{/if}}
+    {{/if}}
+  {{/if}}
+  <p class="{{title}}">No results found</p>
+  <p class="empty-subtitle text-secondary">
+    {{information}}
+  </p>
+  <div class="empty-action">
+    <a href="{{link}}" class="btn btn-primary">
+      <span class="me-1">{{icon_img btn_icon}}</span>
+      {{btn_title}}
+    </a>
+  </div>
+</div>