Root config: Add version config (min and max) (#4970)

https://github.com/XTLS/Xray-core/pull/4968#issuecomment-3146592323

app/version/config.proto

@@ -0,0 +1,14 @@
+syntax = "proto3";
+
+package xray.app.version;
+option csharp_namespace = "Xray.App.Version";
+option go_package = "github.com/xtls/xray-core/app/version";
+option java_package = "com.xray.app.version";
+option java_multiple_files = true;
+
+
+message Config {
+  string core_version = 1;
+  string min_version = 2;
+  string max_version = 3;
+}