Fix downloading shared photos from shared album

[alexismarquis]

Breaking Change
This will extend the classes SynoPhotosAlbum and SynoPhotosItem by an editional property called passphrase which should set to None if the item or album is not shared by others or set to the corresponding passphrase when it is shared.

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Context :
Shared album have a passphrase field that is used in the public sharing link. It is also required by the download and thumbnail api methods.
See home-assistant/core#120817 for more detail.

This PR adds passphrase handling, fixing downloading photos from different users in shared albums.
Additionally, it addresses a problem I encountered with HEIC photos that return an application/octet-stream content type.

Fixes #299

[alexismarquis]

@mib1185 could you take a look at this ?

[mib1185]

Hi @alexismarquis

first thanks for this contribution 👍
There are some formatting issues (see failing CI) which needs to be solved first (easiest way is to use the VSCode dev container). Further there are some typing issues (mypy issues on the CI) which should be solved by the comments below.

From technical point of view, i cannot really verify it, since i do not use the photos station in such way - maybe @lodesmets (sorry for pinging you again 🙈) could also have a look?

As soon as you've done all changes, please press the "Ready for review" button, thx 👍

[alexismarquis]

Hi, thanks for the feedback, requested changes has been done.

[lodesmets]

Hey, @alexismarquis, @mib1185

Looks good. I tested it, And it still seems to work.
I also looked over the code, and it all seems great

[mib1185]

Hi @alexismarquis
again many thanks, we are close to be ready for merge, just some small comments.

@lodesmets thanks for your testing and review efforts 👍

[mib1185]

LGTM, thanks @alexismarquis 👍