fix: missing codes type definition in RPCClient.Config

[daxingplay]

I need to config return codes when construct RPCClient as defined in the code:

openapi-core-nodejs-sdk/lib/rpc.js

Lines 121 to 127 in 9737259

	this.codes = new Set([200, '200', 'OK', 'Success']);
	if (config.codes) {
	// 合并 codes
	for (var elem of config.codes) {
	this.codes.add(elem);
	}
	}

But this codes config was not defined in rpc.d.ts, so I submit this PR to add codes type definition in that declaration file.