VoxyMap Addon for Bobby

New: map mode and map-art markup

• New Maps settings tab (with the vanilla filled-map icon): map grid, grid scale, grid colour, highlight shimmer, mark holograms and "Remove all markups".
• Map mode (2D map with the Maps grid on):
  • the right-click menu starts with a gold Mark this map tile — it places 4 corner marks on the vanilla map cell under the cursor (or on the whole selection if you click inside it). Already marked → Remove markup. Works over unloaded areas too;
  • right-drag selection snaps to map cells instead of chunks and shows "Maps: 2 × 2 (4)" with the block bounds and a Mark button;
  • selected maps are highlighted in gold with a faint pastel shimmer (can be turned off); the frame stays inside the zone.
• Corner marks show up in the world as a translucent gold hologram of the block they stand on, like schematic blocks in Litematica (carpet → thin plate), with no beam or label. On the map and minimap they are regular waypoints.
• Objects list shows a markup as one row with a map icon ("Map 1", "Maps 2 (2×2)"), removable as a whole; new Maps filter.
• fix — map and chunk grids on the 2D map now sit exactly on block edges: drawn in screen pixels with the same origin as the map. Zoomed out the line is 1 screen pixel and no longer covers the edge rows of neighbouring maps.