Add legacy skin and cape routes, improve error handling

Introduces legacy routes for Minecraft skins and capes to support older endpoints. Enhances error handling in sessionsRepository for missing skins/capes, adds getActiveSkin and getActiveCape to sessionsService, and improves error logging in server.js.

server.js

@@ -149,7 +149,7 @@ app.all(/.*/, (req, res, next) => {
 app.use((err, req, res, next) => {
     const statusCode = err.statusCode || err.code || 500
 
-    logger.log(req.originalUrl)
+    logger.error(`Error occured on: ${req.originalUrl.bold}`, ["API", "red"])
     logger.error(err.message, ["API", "red"])
 
     if (typeof err.serialize === "function") {