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.

repositories/sessionsRepository.js

@@ -69,9 +69,14 @@ async function getActiveSkin(uuid) {
         `
         const rows = await database.query(sql, [uuid])
         const skin = rows[0]
-
+        if (!skin) {
+            throw new DefaultError(404, "Not found", "Not found")
+        }
         return { code: 200, data: skin || null }
     } catch (error) {
+        if (error instanceof DefaultError) {
+            throw error
+        }
         logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
         throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
     }
@@ -87,9 +92,14 @@ async function getActiveCape(uuid) {
         `
         const rows = await database.query(sql, [uuid])
         const cape = rows[0]
-
+        if (!cape) {
+            throw new DefaultError(404, "Not found", "Not found")
+        }
         return { code: 200, data: cape || null }
     } catch (error) {
+        if (error instanceof DefaultError) {
+            throw error
+        }
         logger.log("Internal Server Error".bold + " : " + error.toString(), ["MariaDB", "yellow"])
         throw new DefaultError(500, "Internal Server Error", "Please contact an administrator.")
     }