Map transition polish: countdown timer, animated map-name title

Description

The transition between maps in a cup currently feels abrupt. Adding a pre-race countdown and an animated map-name title sequence makes the cup feel like a professional minigame.

Acceptance Criteria

• Before each map starts, a 5-second countdown is displayed (5…4…3…2…1…GO!) as a title
• Countdown title uses: large title = number, subtitle = map name
• "GO!" title stays for 0.5s then clears
• Between maps, a 3-second "inter-map" screen shows: map number (e.g., "Map 2/3"), map name, and current standings
• All timings are configurable in the cup config JSON
• Titles use MiniMessage formatting for color/gradient support

Technical Details

• PreparationPhase handles the countdown — currently exists but may need enhancement
• Inter-map screen happens in CupSystem between GamePhase end and next map load
• Use Minestom TitlePacket with fadeIn, stay, fadeOut times

Dependencies

• "Mid-cup standings display after each map" (Beta) for the standings portion

Estimate

S

Start by reading PreparationPhase for the existing countdown, then inspect CupSystem where GamePhase ends and the next map loads. Review the cup config JSON and Minestom TitlePacket timing options, along with the dependent mid-cup standings issue. Done means configurable countdown and inter-map titles meet every listed timing, content, and MiniMessage requirement.