test: ignore coverage on data-center package

It will be removed soon.

nyc.config.js

@@ -0,0 +1,12 @@
+'use strict';
+
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const defaultExclude = require('@istanbuljs/schema/default-exclude');
+
+module.exports = {
+  exclude: [
+    ...defaultExclude,
+    // data-center will be removed in the future, we don't need to coverage it
+    'packages/data-center/**',
+  ],
+};