More new features and overloads to tilemaps

[Geokureli]

• New helpers getColumnPos, getRowPos, getColumnPosAt, getRowPosAt, getTilePos, getTilePosAt, getAllTilePos, forEachMapIndex, getMapIndexAt, tileExistsAt, columnExistsAt, rowExistsAt, getTileIndexAt, getTileDataAt and setTileIndexAt
• New overloads with worldPos arg in getMapIndex, tileExists, getTileIndex, getTileData and setTileIndex
• deprecate getTileCoordsByIndex, getTileIndexByCoords and getTileCoords
• Fixes to getColumnAt and getRowAt to account for map position
• unit tests for all mentioned above