Add Dummy test for Katana

Author: todi1856

com.unity.mobile.android-logcat/Tests/Runtime.meta

@@ -0,0 +1,11 @@
+using System;
+using NUnit.Framework;
+
+class AndroidLogcatDummyTests
+{
+    [Test]
+    public void DummyTest()
+    {
+        Console.WriteLine("This is a placeholder test, to make Katana happy. To run real Android Logcat tests, you need to switch active platform to Android in Editor");
+    }
+}

com.unity.mobile.android-logcat/Tests/Runtime/AndroidLogcatDummyTests.cs

@@ -0,0 +1,12 @@
+{
+    "name": "Unity.Mobile.AndroidLogcat.RuntimeTests",
+    "optionalUnityReferences": [
+        "TestAssemblies"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "versionDefines": []
+}