Convert test_mapping.zip to soong

Bug: 398025839
Test: Diffed test_mapping.zip before/after this change
Change-Id: Ief6e1dd110749929b55157434a70862efc676eaa
diff --git a/android/Android.bp b/android/Android.bp
index aef18fe..1cc7ffe 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -112,6 +112,7 @@
         "soong_config_modules.go",
         "team.go",
         "test_asserts.go",
+        "test_mapping_zip.go",
         "test_suites.go",
         "testing.go",
         "transition.go",