[CST-5729] Add possibility to store response's headers into the SSR cache

src/config/cache-config.interface.ts

@@ -13,6 +13,8 @@ export interface CacheConfig extends Config {
   serverSide: {
     // Debug server-side caching.  Set to true to see cache hits/misses/refreshes in console logs.
     debug: boolean,
+    // List of headers to restore from the cache hit
+    headers: string[],
     // Cache specific to known bots.  Allows you to serve cached contents to bots only.
     botCache: {
       // Maximum number of pages (rendered via SSR) to cache. Setting max=0 disables the cache.