Synology-api

What's Changed
* 2fa support added by liuerfire
* docker.py renamed into docker_api.py
* Readme instructions updated

New Contributors
* liuerfire made their first contribution in https://github.com/N4S4/synology-api/pull/82

What's Changed

* Bunch functions added to core_sys_info (probably some duplicate that need to be addressed)
* Docker file added 
* LogCenter file added
* Notestation file added 
* VPN file added 
* Drive_admin_console file added 
* OAuth file added 
* Security_advisor file added
* USB_copy file added
* dhcp_server file added
* Synology Photo API added lukas-hetzenecker
* Backup task status added thanks therealj4nd3rs0n  and raph2i
* SYNO.Backup API list changed fix by raph2i
* vault.target.list() added to core_backup (Hyper Backup Vault) by raph2i

Contributors

* raph2i
* therealj4nd3rs0n 
* lukas-hetzenecker

- Directory server API added
- fix issue where additional_param was not returning correct value in downloadstation create_task
- typo and trailing spaces fix in readme file
- minor fix in auth.py where comparison mode has been changed to "=="
- debug added to hide login and some other messages
- gitignore added to package

- DSM 7 login integrated, it must be manually set at the login process
- Downloadstation create_task integrated with PR 64

- Fix error where get_dir_status was not returning the correct value

- Fix bug where different convention was used for core_certificate.py
- Unsecured certificate warning removed at login
- Code optimization