Convert NewProvider/NewMutatorProvider to generic providers API

Convert all of the callers to NewProvider and NewMutatorProvider
to use a generic type parameter instead of an example object.

Bug: 316410648
Test: builds
Change-Id: Ic9cdafc87336e26730d3fd596df05de0e7267542
diff --git a/bloaty/bloaty.go b/bloaty/bloaty.go
index eea8572..97eba70 100644
--- a/bloaty/bloaty.go
+++ b/bloaty/bloaty.go
@@ -52,7 +52,7 @@
 	pctx.SourcePathVariable("bloaty", "prebuilts/build-tools/${hostPrebuiltTag}/bin/bloaty")
 	pctx.HostBinToolVariable("bloatyMerger", "bloaty_merger")
 	android.RegisterParallelSingletonType("file_metrics", fileSizesSingleton)
-	fileSizeMeasurerKey = blueprint.NewProvider(measuredFiles{})
+	fileSizeMeasurerKey = blueprint.NewProvider[measuredFiles]()
 }
 
 // measuredFiles contains the paths of the files measured by a module.