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

dexpreopt/config.go

@@ -321,7 +321,7 @@ func getGlobalConfigRaw(ctx android.PathContext) globalConfigAndRaw {
 				missingDepsCtx.AddMissingDependencies([]string{err.Error()})
 			}
 		} else {
-			android.ReportPathErrorf(ctx, "%w", err)
+			android.ReportPathErrorf(ctx, "%s", err)
 		}
 	}