[enhancement] allow users to rate themes

[enesbala5]

I believe that implementing Likes on the themes could be really helpful to new users who want to find the best themes for them.

At this point, the theme store could do without them, as there are only so many themes, but as more themes get added, the task of finding good themes will get progressively harder.

[devxan]

Filters would be a great addition. Besides user ratings, the theme store could allow users to sort/filter by creation or last update date, and user count (if nonintrusive telemetry was added).

Oh - and also display if a theme is installed without clicking into it.

[Heinrich-XIAO]

This might require the collecting of personal data. Because there need to be accounts to rate things without getting spammed.

[devxan]

This might require the collecting of personal data. Because there need to be accounts to rate things without getting spammed.

Ratings could use GitHub accounts for sign-in, so that no personal information would need to be collected. (And to deter spammers, as making multiple GitHub accounts would be harder than making multiple 1st-party accounts.)

I saw that sorting by creation or update date was added! That's good. But for download count, I don't think that would need accounts, maybe a cookie or something in local storage to say 'this browser has already downloaded this mod' to prevent most repeats.

[plutonium-239]

I have no idea why along with the beta version and the website refresh, we lost sorting/filtering mods.