feat(pack): add Mazes

Mazes is a NeoForge 1.21.1 mod that adds a Maze Generator block: place it,
open the GUI, and it builds a flat, configurable maze on the block's own
level. The border is a subtractive cell mask cut out with pencil/rectangle
tools, so it can fill odd shapes and rooms instead of only a rectangle.

The mod is not on Modrinth or CurseForge, so the jar is hosted as a release
asset on yonlu/mazes and referenced with a packwiz url metafile. It targets
NeoForge 21.1.0+, so the pack's 21.1.251 is fine, and side is "both" because
it registers a block entity and network payloads.

pack.toml

@@ -6,7 +6,7 @@ pack-format = "packwiz:1.1.0"
 [index]
 file = "index.toml"
 hash-format = "sha256"
-hash = "f8440954feca2fde012fe8cedb664a48aa3e08ae67ce00125aa7c5ea31d58c56"
+hash = "16a6861164723aa33a65014cdc2dee0641c6cbab3d4c08b9bb31f34386137a51"
 
 [versions]
 minecraft = "1.21.1"