[Feature] Blockmaps and Rejects

[Quakken]

Summary

Read and store the BLOCKMAP and REJECTS lumps from a level's wad, and use them to calculate collisions and L.O.S.

• Blockmaps store collision information for each cell in a level.
• Rejects store information about line of sight between sectors.

Tasks

• Blockmap parsing
• Reject parsing
• Blockmap collision detection
• Reject line of sight detection

Notes

No response