Add validation schemas and improve texture handling

Introduces zod-based validation schemas for Minecraft and Mojang API endpoints. Refactors texture route to support hash-based file serving and removes the old static texture route. Updates database schema for player properties and adds an event to clean expired certificates. Improves ValidationError formatting, adjusts skin/cape URL construction, and adds SSRF protection for skin uploads.

schemas/minecraftservices/privacy/blocklist/[uuid].js

@@ -0,0 +1,28 @@
+const z = require("zod")
+
+module.exports = {
+    PUT: {
+        headers: z.object({
+            "authorization": z.string().min(1, { message: "Authorization header is required." })
+        }),
+        params: z.object({
+            uuid: z.string().uuid({ message: "Invalid UUID." })
+        }),
+        error: {
+            code: 400,
+            message: "Invalid UUID"
+        }
+    },
+    DELETE: {
+        headers: z.object({
+            "authorization": z.string().min(1, { message: "Authorization header is required." })
+        }),
+        params: z.object({
+            uuid: z.string().uuid({ message: "Invalid UUID." })
+        }),
+        error: {
+            code: 400,
+            message: "Invalid UUID"
+        }
+    }
+}