Add instructions in the image uploader configuration

[CouldBeThis]

Describe your feature request

Preferences -> Image uploader -> GitHub needs a bit of instruction.

I would suggest something like this:

If you don't have a GitHub account, you will need to make one.
A token can be generated in Settings/Developer settings
For more detailed instructions, consult the wiki.
Note: By default, all uploads to GitHub are public. It is possible to configure your repository to be "private".
❓How private is private?? I tried to find some info but can't.

What problem does this feature solve? [optional]

Not everyone is familiar with how to use this GitHub feature. (Or even that GitHub exists.)

Additional context [optional]

Someone else who couldn't figure it out:
How to set github token on mac os ? #1476
It's worth noting that 99% of people who can't figure this out also won't think to make an issue on GH so this is likely an extreme under representation of those with problems.

Also, about the wiki page

This could use a bit of work but I'm not sure what the system is for helping with that. Do I put my edit here or as a new issue? Or if I hit "edit" on the wiki make some magic happen and create a discussion? Or is there someone here really likes editing the wiki?

What's needed is:

1. Brief 1 or maybe 2 sentence explanation of what GH is.
2. At least some links to docs about how to create a repo. Hints on what kind to create (public/private, template folder, ghpages... various things that can be confusing.)
3. A brief description of what a token is
4. Guidance on what scopes to select. First I tried selecting nothing, but that didn't work. I got it by checking all the boxes in the first section. But are they all required or can/should I change anything? (my repo is private)

• Repo - Full control of private repositories
  • repo:status - Access commit status
  • repo_deployment - Access deployment status
  • public_repo - Access public repositories
  • repo:invite - Access repository invitations

[Jocs]

@CouldBeThis Help is wanted, thanks

[ShravanSunder]

@CouldBeThis did you get the images to upload. i got the api key and everything setup, according to your comments, but i can't get the image to upload

[mxrodriguez]

Same issue here. I created the Repo and generated a APi token.. but Image upload is failing.
A bit more details in the wiki would be helpful

[Cipher358]

Same here on version 0.16.1 of MarkText on a private repository with all the repo permissions.
I tried using a public repo but the result was the same.

[teopost]

I have the same problem too - rel. 0.16.1

[vio1etus]

same here in Linux. I don't think the instruction is detailed. It‘s the obstacle for me to start using marktext.

[ctjlewis]

Does anyone know where logs might be located where I can debug why this isn't working? Installed from Flatpak on Ubuntu.

[phanikaran]

This helped me get it done in case someone else's still looking - https://github.com/marktext/marktext/blob/develop/docs/IMAGE_UPLOADER_CONFIGRATION.md