Convert the following singletons to use ModuleProxy:

buildTargetSingleton
exportedJavaDeclarationsLibrarySingleton
javaFuzzPackager
kytheExtractAllSingleton
kytheExtractJavaSingleton
kytheExtractRustSingleton
lintSingleton
logtagsSingleton
makeVarsSingleton
ndkAbiDiffSingleton
ndkAbiDumpSingleton
phonySingleton
platformCompatConfigSingleton
sdkSingleton

Bug: 377723687
Test: Unit tests and compare the ninja and mk files generated.
Change-Id: I625ac8a209ca93755b2ba232202cfb44ecefde0a
diff --git a/java/aar.go b/java/aar.go
index 976e4fc..0e27cb8 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -945,6 +945,12 @@
 
 var AndroidLibraryInfoProvider = blueprint.NewProvider[AndroidLibraryInfo]()
 
+type AARImportInfo struct {
+	// Empty for now
+}
+
+var AARImportInfoProvider = blueprint.NewProvider[AARImportInfo]()
+
 type AndroidLibrary struct {
 	Library
 	aapt
@@ -1571,6 +1577,8 @@
 		JniPackages: a.jniPackages,
 	})
 
+	android.SetProvider(ctx, AARImportInfoProvider, AARImportInfo{})
+
 	ctx.SetOutputFiles([]android.Path{a.implementationAndResourcesJarFile}, "")
 	ctx.SetOutputFiles([]android.Path{a.aarPath}, ".aar")