Return database values in GET endpoints; add overrides info route; remove comments

- GET endpoints now return raw database values (not overridden values)
- Created /api/admin/overrides route that returns which fields are overridden by env vars
- Removed comments from POST endpoints
- Admin panel can now show database values and display indicators for overridden fields

Co-authored-by: kaaax0815 <32197462+kaaax0815@users.noreply.github.com>

src/server/api/admin/overrides.get.ts

@@ -0,0 +1,24 @@
+export default definePermissionEventHandler('admin', 'any', async () => {
+  return {
+    interface: {
+      port: WG_OVERRIDE_ENV.PORT !== undefined,
+      device: WG_OVERRIDE_ENV.DEVICE !== undefined,
+      mtu: WG_OVERRIDE_ENV.MTU !== undefined,
+      ipv4Cidr: WG_OVERRIDE_ENV.IPV4_CIDR !== undefined,
+      ipv6Cidr: WG_OVERRIDE_ENV.IPV6_CIDR !== undefined,
+    },
+    userConfig: {
+      host: WG_CLIENT_OVERRIDE_ENV.HOST !== undefined,
+      port: WG_CLIENT_OVERRIDE_ENV.CLIENT_PORT !== undefined,
+      defaultDns: WG_CLIENT_OVERRIDE_ENV.DEFAULT_DNS !== undefined,
+      defaultAllowedIps: WG_CLIENT_OVERRIDE_ENV.DEFAULT_ALLOWED_IPS !== undefined,
+      defaultMtu: WG_CLIENT_OVERRIDE_ENV.DEFAULT_MTU !== undefined,
+      defaultPersistentKeepalive: WG_CLIENT_OVERRIDE_ENV.DEFAULT_PERSISTENT_KEEPALIVE !== undefined,
+    },
+    general: {
+      sessionTimeout: WG_GENERAL_OVERRIDE_ENV.SESSION_TIMEOUT !== undefined,
+      metricsPrometheus: WG_GENERAL_OVERRIDE_ENV.METRICS_PROMETHEUS !== undefined,
+      metricsJson: WG_GENERAL_OVERRIDE_ENV.METRICS_JSON !== undefined,
+    },
+  };
+});