feature: Include theme checker tool in Hubl

src/views/partials/header.pug

@@ -5,6 +5,16 @@
 
   span.beta-tag(data-trans='header.beta')
 
+if themeChecker
+  div.selector
+    each val, index in ['primary', 'secondary', 'complementary', 'complementary-darken']
+      label= 'Couleur ' + (index+1)
+        input.input-color(
+          id='color-'+val
+          type="text"
+        )
+
+
 solid-notifications.notLoggedIn(
   nested-field="inbox"
   bind-user