Major refactoring: Add user id to API routes

package-shared/utils/grab-host-names.js

@@ -8,6 +8,7 @@ const http = require("http");
  * @property {string} host
  * @property {number | string} port
  * @property {typeof http | typeof https} scheme
+ * @property {string | number} user_id
  */
 
 /**
@@ -29,6 +30,7 @@ function grabHostNames() {
         host: remoteHost || localHost || "datasquirel.com",
         port: remoteHostPort || localHostPort || 443,
         scheme: scheme?.match(/^http$/i) ? http : https,
+        user_id: String(process.env.DSQL_API_USER_ID || 0),
     };
 }