Set cache headers for static asset responses

Added a `Cache-Control` header to static asset responses to ensure proper caching. This improves performance by allowing public, immutable assets to be cached for 30 days.

Signed-off-by: Akama Aka <akama.aka@akami-solutions.cc>

server.js

@@ -14,7 +14,8 @@ const server = require('fastify')({logger: process})
         timeWindow: '15 minutes' // time window for the rate limit
     }).register(require('@fastify/static'), {         // For all Static files like Styling, JavaScript Cde
         prefix: `/${process.env.PATH_IDENTIFIER}/assets/`,
-        preCompressed: true,
+        setHeaders: (res) => {
+            res.setHeader('Cache-Control', 'public, immutable, max-age=2592000');
         },
         root: join(__dirname + '/public/assets/')
     })