Better signature for JS runtime HMAC-SHA256 and Base64 functions.

- Added next and previous cursor to results of leaderboard and tournament records around owner client operations.

- Added next and previous cursor to results of leaderboard and tournament records haystack runtime operations.

- Build with Go 1.18.3 release.

- Improve signature of JavaScript runtime HMAC SHA256 hash function.

- Improve signature of JavaScript runtime Base64 encode functions.

## [3.12.0] - 2022-05-22

### Added

// @return error(error) An optional error value if an error occurred.

func (n *runtimeJavascriptNakamaModule) base64Encode(r *goja.Runtime) func(goja.FunctionCall) goja.Value {

	return func(f goja.FunctionCall) goja.Value {

		in := getJsString(r, f.Argument(0))

		if goja.IsUndefined(f.Argument(0)) || goja.IsNull(f.Argument(0)) {

			panic(r.NewTypeError("expects a string or ArrayBuffer object"))

		}

		var in []byte

		switch v := f.Argument(0).Export(); v.(type) {

		case string:

			in = []byte(v.(string))

		case goja.ArrayBuffer:

			in = v.(goja.ArrayBuffer).Bytes()

		default:

			panic(r.NewTypeError("expects a string or ArrayBuffer object"))

		}

		padding := true

		if f.Argument(1) != goja.Undefined() {

			padding = getJsBool(r, f.Argument(1))

			e = base64.RawURLEncoding

		}

		out := e.EncodeToString([]byte(in))

		out := e.EncodeToString(in)

		return r.ToValue(out)

	}

}

			panic(r.NewGoError(fmt.Errorf("error creating hash: %v", err.Error())))

		}

		return r.ToValue(string(mac.Sum(nil)))

		return r.ToValue(r.NewArrayBuffer(mac.Sum(nil)))

	}

}