TileMap method to iterate over rows or columns

[eonarheim]

Context

Currently TileMaps only support iterating over Cells in row major order from the TileMap.data property. Many times you want to iterate over rows or columns to do some sort of generation

Proposal

Add a TileMap.rows and a TileMap.columns that organize the cells into rows and columns.

public get rows(): Cell[][] {
  ...
}

public get columns(): Cell[][] {
  ...
}

[github-actions]

This issue hasn't had any recent activity lately and is being marked as stale automatically.