[Enhancement] Add Regression tests.

[ildyria]

Add more tests here https://github.com/LycheeOrg/Lychee/tree/master/tests/Feature :

• [Regression] photos not sorted #631
• [Regression] Error 500 on Albums::get() when using a user account. #635
• Black page and "server error or api not found" when users login #734
• [regression] Error 500 on albums::get() when album are shared between users (when logging on said user). #643
• [Regression] Non admin users cannot add photos or albums #669
• [Regression] Move does not work anymore. #673
• /api/Sharing::List Error #781

[kamil4]

I would add #691 to the list. Password-protection is a tricky edge case, especially since it needs to be handled differently in regular browsing vs search.

[ildyria]

added #734 to the list

[nagmat84]

I have checked #635, #643 and #781. These bugs are definitely covered by the newly added authorization tests.