UniversalAdmin 1.9.0

The second half of the menu overhaul, and a look over everything else:
compatibility, migrations and how easy UniversalAdmin is to use.

Added

• Server, worlds and performance as hubs, like the player profile: what
  you see in a light blue row, what you do in rows behind coloured labels -
  green harmless, orange with an effect on players, red dangerous.
• Live values: the main menu, server, worlds, a world and performance
  update once a second while open.
• Traffic lights on the performance page: TPS, MSPT and memory in green,
  yellow or red, measured against your alert thresholds.
• A world's settings show their value: time (as a clock), weather,
  difficulty, spawn and world border show what they are now and change on a
  click.
• The audit log reads in the server's language: "Ban - Admin banned
  Notch for 7d: Griefing" instead of core:moderation.ban and an English
  sentence. See ADR 0028.
• Minecraft's names in your game's language: game modes, difficulties,
  effects and entities ("Überlebensmodus", "Eile") instead of SURVIVAL,
  SPEED.
• New options reach your config.yml: an update writes options it brings
  into your existing file with their explanation; the console lists them.
• A hint for staff on their first join: /admin opens the menu - and if
  your game runs in a language UniversalAdmin ships that the server does not
  use, one click switches it.

Fixed

• Heal, feed, extinguish, clear effects and the flight, glow, gravity and
  collision switches wrote their raw input into the audit log
  (PlayerTargetInput[targetId=...]).
• The used deprecated getBedSpawnLocation and effect getName are
  replaced.

For extension developers

• API 1.8: GuiRows, GuiButton#display, GuiPage#live(),
  ActionDefinition.Builder#auditArgs, Migration#namespace() (your own
  numbering in ua_extension_migrations), MessageService#get(locale, ...).
  Everything has a default; extensions built against API 1.7 keep working.
• ./gradlew build checks the jar against the Paper API of 1.21.7, 1.21.11
  and the version compiled against (binaryCompatibility).

What's Changed

• UniversalAdmin 1.9.0 by @nicki41 in #19

Full Changelog: v1.8.0...v1.9.0