aconfig: create unit test targets for aconfig_protos and
aconfig_storage_file crate

also added a bunch of comments to satisfy android lint requirements

Bug: b/321077378
Test: atest aconfig.test, atest aconfig_protos.test, atest aconfig_storage_files.test
Change-Id: I9bce302ac3bc98c5347e5334d915e77337ee89c4
diff --git a/tools/aconfig/TEST_MAPPING b/tools/aconfig/TEST_MAPPING
index de8d932..650c8c0 100644
--- a/tools/aconfig/TEST_MAPPING
+++ b/tools/aconfig/TEST_MAPPING
@@ -58,6 +58,14 @@
     {
       // printflags unit tests
       "name": "printflags.test"
+    },
+    {
+      // aconfig_protos unit tests
+      "name": "aconfig_protos.test"
+    },
+    {
+      // aconfig_storage_file unit tests
+      "name": "aconfig_storage_file.test"
     }
   ]
 }