perf: precompress and cache assets (#7757)

* perf: precompress and cache assets

* fix cache header

* use startswith

---------

Co-authored-by: mertalev <101130780+mertalev@users.noreply.github.com>

web/svelte.config.js

@@ -6,13 +6,8 @@ const config = {
   preprocess: vitePreprocess(),
   kit: {
     adapter: adapter({
-      // default options are shown. On some platforms
-      // these options are set automatically — see below
-      pages: 'build',
-      assets: 'build',
       fallback: 'index.html',
-      precompress: false,
-      strict: true,
+      precompress: true,
     }),
     alias: {
       $lib: 'src/lib',