Refactors tileset implementations by introducing thehiglass.tilesets.register decorator. When applied to a class
implementing TilesetProtocol, this decorator adds a track() method, enabling track creation while automatically registering the tileset instance in the global TilesetRegistry.

from clodius.tiles.cooler import tiles, tileset_info
from dataclasses import dataclass

@hg.tilesets.register
@dataclass
class MyCustomCoolerTileset:
    path: str
    datatype = "matrix"

    def tiles(self, tile_ids):
        return tiles(self.path, tile_ids)

    def info(self):
        return tileset_info(self.path)

ts = MyCustomCoolerTileset("test.mcool")
hg.view(ts.track())

Description

What was changed in this pull request?

Why is it necessary?

Fixes #___

Checklist

• Clear PR title (used for generating release notes).
  • Prefer using prefixes like fix: or feat: to help organize auto-generated notes.
• Unit tests added or updated.
• Documentation added or updated.