OBD-2 Codes Reading Application

Same as ag/9175369 but on the master branch

Implements UI features in go/aae-obd-codes-application
While the end user is not certain, currently it is
mainly just a test application.

Not complete until DTC properties added to VHAL at
which point DTC VHAL interactions will be implemented in a different CL

Test: Tested Manually with tapas DiagnosticTools && m && adb install -t "${ANDROID_PRODUCT_OUT}/data/app/DiagnosticTools/DiagnosticTools.apk" && adb logcat
Change-Id: Ic0aa79e65f3f856667c09e42a2b6e08d660d2b1d
diff --git a/tests/DiagnosticTools/res/layout/diagnostic_tools.xml b/tests/DiagnosticTools/res/layout/diagnostic_tools.xml
new file mode 100644
index 0000000..44c6f64
--- /dev/null
+++ b/tests/DiagnosticTools/res/layout/diagnostic_tools.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2019 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<LinearLayout
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
+  xmlns:tools="http://schemas.android.com/tools"
+  android:layout_width="match_parent"
+  android:layout_height="match_parent"
+  android:orientation="vertical">
+
+  <Toolbar
+    android:id="@+id/toolbar"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?android:attr/colorPrimary"
+    android:elevation="4dp"
+    android:theme="@android:attr/actionBarTheme"/>
+
+  <FrameLayout
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <androidx.recyclerview.widget.RecyclerView
+      android:id="@+id/my_recycler_view"
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      android:scrollbars="vertical"/>
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+      android:id="@+id/floatingActionButton"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:clickable="true"
+      android:layout_gravity="bottom|end"
+      android:layout_margin="16dp"
+      android:src="@drawable/ic_delete_sweep_black_24dp"
+      android:onClick="onClickActionButton"/>
+  </FrameLayout>
+
+
+</LinearLayout>
+
+