Use generics for DepSets

Use Go's generics for DepSets so they don't require a type-specific
wrapper and reflection.

Test: depsets_test.go
Change-Id: I22ba0b7d680d37d2cd05230b0f560d166c4dd20b
diff --git a/rust/library.go b/rust/library.go
index a3a5672..5e445a9 100644
--- a/rust/library.go
+++ b/rust/library.go
@@ -567,7 +567,7 @@
 	}
 
 	if library.static() {
-		depSet := android.NewDepSetBuilder(android.TOPOLOGICAL).Direct(outputFile).Build()
+		depSet := android.NewDepSetBuilder[android.Path](android.TOPOLOGICAL).Direct(outputFile).Build()
 		ctx.SetProvider(cc.StaticLibraryInfoProvider, cc.StaticLibraryInfo{
 			StaticLibrary: outputFile,