Add Flathub download button and Flatpak manifest

[grisha765]

Summary

Infrastructure "Add Flathub download button and Flatpak manifest"

Purpose of change

To make it easier for users to download the game via Flathub, I have added a download button that directs users to the Flathub page. Additionally, I included a Flatpak manifest (yaml) in the repository to facilitate the building and distribution of the game via Flatpak.

Describe the solution

• Added a "Download on Flathub" button in README.md.
• Created a Flatpak manifest (yaml) file and added it to the repository, allowing the game to be easily packaged and distributed via Flatpak.

Describe alternatives you've considered

I considered creating a separate repository specifically for the Flatpak version of the game, but ultimately decided to submit it to Flathub to leverage its existing infrastructure and reach a wider audience.

Testing

• Verified that the Flathub download button correctly links to the Flathub page.
• Tested the Flatpak manifest by building the package locally to ensure it works as expected.

Additional context

N/A

[kevingranade]

That's fine but need to reign in that badge size, it's pretty egregiously overstating the prominence of flathub.

[grisha765]

That's fine but need to reign in that badge size, it's pretty egregiously overstating the prominence of flathub.

I'll make it smaller

[kevingranade]

Looks good to me, sorry to be picky about the badge but it feels like advertising for flatpack at some point instead of just offering an option.

[akrieger]

So to update the flathub download, we have to update the commit hash in the manifest?

[akrieger]

I see, it's currently pointing to 0.G.

[Raikiri]

does it make sense to have an autoupdating experimental version?

[grisha765]

does it make sense to have an autoupdating experimental version?

in the beta branch I try to upload the latest experimental version every Monday