Modern Content Backport

## New: Snapshot 26.4-4/5 ice update
- Brittle Ice: cracks when walked on (Frostbites don't break it).
- Ice crevasses in Ice Caves (Brittle Ice over water).
- Packed Ice Bricks, stairs, slab, wall and Chiseled Packed Ice.
- Jukebox playlists.
- Snapshot 5 spawn rule for Strays and Frostbites.
- Projectiles breaking icicles, decorated pots and chorus flowers follow Adventure mode and mobGriefing.
- New ice sounds, ambience and vibrations.

## New
- Debug command `/mcb debug spawn drownedjockey|zombiehorsejockey|camelhuskcaravan [pos]` (op level 2).

## Changed
- Wind Charges break chorus flowers and press pressure plates / tripwires before bursting (as in 1.21).
- Mace Wind Burst and the Wind Charged death burst now trigger doors, levers, buttons, bells and candles.
- Mace trade setting: MTI's `maceEnchantmentTrades` takes priority when MTI is installed.
- New mod logo.

## Fixed
- Startup crash with mods that change `Mob.populateDefaultEquipmentSlots` ("cannot reduce visibility").
- Snowy village shepherd houses now generate (vanilla template typo).

## Notes
- For those looking for Vanilla Backport 1.2 compat install beta please install beta version of 3.1.0 release, that is a experimental jar contains compat codes which this release version don't