Significantly raise pushSpeed values across all levels (roughly 4x increase)
to make the game more challenging. Updated corresponding star score thresholds
proportionally. Adjusted editor UI max pushSpeed to 400 and updated validation
constraints to match.
Changes affect:
- data/zuma.json: level definitions with new pushSpeed and starScores
- src/games/zuma/ZumaEditor.js: editor input max value
- src/games/zuma/ZumaLogic.js: validation range
- tools/genZuma.js: generator table values
