feat: add autocomplete tags input and dropdown

app/assets/stylesheets/_sn.scss

@@ -40,6 +40,10 @@
   border-color: var(--sn-stylekit-background-color);
 }
 
+.focus\:border-bottom:focus {
+  border-bottom: 2px solid var(--sn-stylekit-info-color);
+}
+
 .grid {
   display: grid;
 }
@@ -155,6 +159,10 @@
   height: 1.25rem;
 }
 
+.h-7 {
+  height: 1.75rem;
+}
+
 .h-8 {
   height: 2rem;
 }
@@ -187,6 +195,14 @@
   padding: 0.5rem;
 }
 
+.flex-wrap {
+  flex-wrap: wrap;
+}
+
+.whitespace-pre-wrap {
+  white-space: pre-wrap;
+}
+
 /**
  * A button that is just an icon. Separated from .sn-button because there
  * is almost no style overlap.