chore(config): relocate socket-repo-template marker to .config/

Moves .socket-repo-template.json -> .config/socket-repo-template.json per socket-repo-template 83137ec. Loader still reads the legacy root path; this move is mechanical. $schema ref rewritten ./ -> ../ for the new depth.

Author: jdalton

.socket-repo-template.json .config/socket-repo-template.json.socket-repo-template.json renamed to .config/socket-repo-template.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "./socket-repo-template-schema.json",
+  "$schema": "../socket-repo-template-schema.json",
   "schemaVersion": 1,
   "repoName": "socket-addon",
   "kind": "consumer"