fix: add tab helper for highlighting the active guild tab

src/server/middleware/guildTabHelper.ts

@@ -0,0 +1,10 @@
+import { Request, Response, NextFunction } from "express";
+
+// This middleware returns the last segment of the url path.
+// It's used to identify which tab to highlight as active on
+// the guild view at '/guild/<id>/<page>'
+export const guildTabHelper = (request: Request, response: Response, next: NextFunction) => {
+    const currentPath = request.path.split("/")
+    response.locals.guildPage = currentPath[currentPath.length - 1]
+    next();
+}