feat: use jsdeliver instead of github url

[0xMRTT]

Description

We can use JSDeliver for downloading files instead of directly getting them from github because:

• CDN all around the world (more than 750 point of presence) and in China
• based on multiple providers
• almost 100% uptime
• files are stored in a permanent S3 storage to ensure that files remain avaiilble even if Github goes down.

Blocking

• Maybe, that can lead to slow propagation of preset if we do changes

Type of change

• Bugfix (Change which fixes a issue)
• New feature (Change which adds new functionality)
• Enhancement (Change which slightly improves existing code)
• Breaking change (This change will introduce incompatibility with existing functionality)

Changelog

• Changed repo url

Testing

• I have tested my changes and verified that they work as expected

[tfuxu]

Maybe we should inform users about using JSDeliver service? I don't think we need to do this in-app, but a small note section in readme would be good to add.

[daudix]

maybe this is over-kill for our app?

[0xMRTT]

That can help to provide preset everytime, even if github goes down ...

[tfuxu]

The idea with JSDeliver is good, but we should implement it in such a way that it will be opt-in to use. Users could go for example to preferences and toggle an option to enable it when GitHub (for example) goes down.

[tfuxu]

Converted to draft, as we need to add this option to preferences window.

[tfuxu]

Why?

[0xMRTT]

I think that's not necessary ...

[tfuxu]

It isn't necessary, but it still would be useful if Github for example went down

[0xMRTT]

@daudix-UFO RFC for title and subtitle

@tfuxu Request for code review

[daudix]

First issue, can't start

Приложение запущено в 22:02:26
                              Traceback (most recent call last):
  File "/app/bin/gradience", line 70, in <module>
    from gradience.frontend import main
  File "/app/lib/python3.10/site-packages/gradience/frontend/main.py", line 27, in <module>
    from gradience.backend.globals import presets_dir, get_gtk_theme_dir
  File "/app/lib/python3.10/site-packages/gradience/backend/globals.py", line 53, in <module>
    preset_repos = preset_repos_github
NameError: name 'preset_repos_github' is not defined
Приложение завершилось

[0xMRTT]

Oh messed up when resolving the merge conflict 🤫

[tfuxu]

I'll review the code tomorrow, as it's pretty late where I live, but from what I quickly tested, it looks and works fine

[tfuxu]

Works for me after a fix. I'd like to re-request @0xMRTT and @daudix-UFO for review to make sure it works properly on your machines too.

[daudix]

Works fine :)

[0xMRTT]

Hmm, I think that there is one preset repos which is still using the hardcoded one but idk where it is since I'm not at home...

[daudix]

JSDeliver is used for both official and curated, so I think it's fine

[0xMRTT]

Tried, and that's okay for me!