Add max retries for downloader

[yz3440]

Having a while True in the library is scary. I have had infinite loops when I have a special bad panorama ID.

Normal non-existent ID points to an url that's requestable, but gives back bad data, which causes the program to error out on the image parsing exception. There are also a few special bad ID that straight cannot be requested, and the program will keep trying til the end of the world. I don't have example IDs in hand at the moment, but please trust me on this. My guess is that these ID exists but are unpublished by Google due to whatever reason.

I'm suggesting to enforce a default max_retries of 6 for the download functions, and also make it to be user configurable.

[yz3440]

@robolyst kindly asking for your attention again, have a great weekend

[robolyst]

Nice!

I see some of the function arguments look like:

max_retries: int = DEFAULT_MAX_RETRIES

while others look like:

max_retries: int

Can they all have the default please so that things work seamlessly for everyone?

[yz3440]

@robolyst thanks the for timely feedback. could you please make a new release on pypi after merging this? I have an ongoing project that could use this help to simplify my setup by a bunch.

[robolyst]

Release going out. Thank you so much for all you improvements 🙏