✨(react) add horizontal mode to LabelledBox

This way initially added for the multi select but after some discussions
we decided to keep the label vertical even for the multi select. But this
could be useful in the future.

packages/react/src/components/Forms/LabelledBox/index.scss

@@ -38,4 +38,21 @@
       flex-grow: 1;
     }
   }
+
+  &--horizontal {
+    display: flex;
+    align-items: center;
+    height: auto;
+
+    label {
+      padding-top: 0;
+      position: static;
+      flex-shrink: 0;
+    }
+
+    .labelled-box__children {
+      flex-grow: 1;
+      padding: 0;
+    }
+  }
 }