[google_maps_flutter] Convert heatmap controller to Swift - #12713

[google_maps_flutter] Convert heatmap controller to Swift#12713

stuartmorgan-g wants to merge 17 commits into

flutter:mainflutter/packages:mainfrom

stuartmorgan-g:maps-swift-heatmaps-and-utilsstuartmorgan-g/packages:maps-swift-heatmaps-and-utilsCopy head branch name to clipboard