Create JNI layer for Icing

Bug: 146383629
Test: manual 'atest
java/tests/instrumentation/src/com/google/android/icing/IcingSearchEngineTest.java'

Change-Id: I3868ca19a477bd6996f268d2a73a1dc906afaee6
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 12188f8..37cb5fc 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -1,4 +1,9 @@
 {
+  "presubmit": [
+    {
+      "name": "IcingSearchEngineTest"
+    }
+  ],
   "imports": [
     {
       "path": "frameworks/base/apex/appsearch/service/java/com/android/server/appsearch"