Get rid of localized guild feature list in serverinfo

[Jackenmen]

Description of the changes

An attempt at lowering the requirement for constant maintenance of the guild feature list. This PR makes it so that instead of maintaining a guild features list, we show the guild features as given to us by the API. Mostly. I've made 3 exceptions where the automatic casing didn't really make sense to me.

Before:

After:

As can be seen on the screenshots, this PR makes [p]serverinfo 1 show more features than before but to me, it kind of seems like an upside... Feel free to comment if you disagree.

Have the changes in this PR been tested?

Yes

[Kowlin]

Thread archive duration, Threads active, New thread permissions and VIP regions can also be removed since they no longer apply. Also News falls under Community now as it's a mainline community feature and the same applies to Enabled Discovery before with Discovery, as enabled discovery before only handles if it should show the discovery splash page.

[Jackenmen]

I'm unsure whether it's worth making the change if we're just going to switch it from include list to exclude list. I guess it at least means that new features will show immediately so there is an upside there.

[Kowlin]

I think the change to an exclude list would be better due the fact that Discord will keep adding more feature flags over the years, without attempts at cleaning up their old flags.

NEWS is given with COMMUNITY, THREE_DAY_THREAD_ARCHIVE, and SEVEN_DAY_THREAD_ARCHIVE have become baseline within Discord ever since Discord started rolling out Forum channels in limited private beta, VIP_REGIONS is an partner flag that Legacy Partners carried over along with a permanent VANITY_URL so is largely attached to PARTNERED NEW_THREAD_PERMISSIONS, THREADS_ENABLED, and TEXT_IN_VOICE_ENABLED are considered not applicable because they have been rolled out entirely

The same can be seen with user flags, such as SPAMMER.

[Jackenmen]

I added an exclude list. Excluded:

• THREE_DAY_THREAD_ARCHIVE (available to everyone since forum channels private beta)
• SEVEN_DAY_THREAD_ARCHIVE (available to everyone since forum channels private beta)
• NEW_THREAD_PERMISSIONS (rolled out to everyone already)
• TEXT_IN_VOICE_ENABLED (rolled out to everyone already)
• THREADS_ENABLED (rolled out to everyone already)

NEWS is given with COMMUNITY

I made it so COMMUNITY flag is present, NEWS is removed, does that make sense? News channels were a thing before community servers so some servers may have it without that flag.

VIP regions can also be removed since they no longer apply.

Red doesn't have PARTNERED flag but it does have VIP_REGIONS. Legacy partners can have a higher bitrate in voice channels without the need for a boost level so this flag still has a meaning.

I think ENABLED_DISCOVERABLE_BEFORE actually means that a guild has been in Discovery at least once so it's not really a legacy flag. We could maybe consider showing it only if the guild isn't currently in Discovery (so when it doesn't have DISCOVERABLE flag)

[Kowlin]

I honestly love those options and they all make sense to me.

[red-githubbot[bot]]

#6055 is a backport of this pull request to Red 3.4.