refactor: separate api/appointment.ts into several services

Tomas

2021-12-22 23f7ec5f7cd67322617e623361a5620d405dfeda

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export function isMobileDevice(): boolean {
    const mobileDevices = ['Android', 'webOS', 'iPhone', 'iPad', 'iPod', 'BlackBerry', 'Windows Phone'];
    return mobileDevices.some(e => navigator.userAgent.match(e));
}