feat: redirect to unit page if the hit or its parent is a unit (#957)

This change adds the feature to redirect from a search result to a Unit, in case the hit parent is a Unit, or the hit is a unit itself.

src/custom.d.ts

@@ -2,3 +2,8 @@ declare module '*.svg' {
   const content: string;
   export default content;
 }
+
+declare module '*.json' {
+  const value: any;
+  export default value;
+}