Spoilers tags for achievements

[kdecks]

(RAIntegration issue as this is a hybrid enhancement RetroAchievements/RAIntegration#295)

As a player playing a game for the first time, especially a story driven one, I'd like to have the option for plot elements in achievements and descriptions hidden from me.

This is especially true for RPGs, but can apply to all sorts of games. Reading about characters I will meet, places I will go, bosses I will encounter, all of these could be minor or major spoilers.

Here's what I propose via a series of images:
(the images are to convey the idea, not the ideal placement or design)

(for RASuite) Allow achievements to be tagged by the developer:

In the emulator the tagged achievment would be hid:

Once earned they would be revealed.

A display switch for the emulator:

A setting switch on the game page:

Once earned they will be revealed.

A global setting switch from My Settings:

Other stuff/Questions:

• Should spoilers be hidden for users not signed in?
• How else could this be presented?
• About retroarch, it could be left out, or if someone was interested added in as well, but the emulator hide/reveal settings are intended for RA emus.
• Would spoiler achievement also be hidden from the global feed?