add an example of Custom addon

app/src/main/java/com/logitanalyticsapp/CustomAnalytiksAddon.kt

@@ -0,0 +1,35 @@
+package com.logitanalyticsapp
+
+import android.content.Context
+import android.util.Log
+import com.analytiks.core.AnalyticsDataTransmitterExtension
+import com.analytiks.core.CoreAddon
+import com.analytiks.core.EventsExtension
+import com.analytiks.core.UserProfileExtension
+import com.analytiks.core.model.Param
+import com.analytiks.core.model.UserProperty
+
+class CustomAnalytiksAddon : CoreAddon,
+    EventsExtension,
+    UserProfileExtension,
+    AnalyticsDataTransmitterExtension {
+    override fun initialize(context: Context) {
+        Log.d("GlobalTag", "CustomAnalytiksAddon has been initialized");
+    }
+
+    override fun reset() {
+        Log.d("GlobalTag", "CustomAnalytiksAddon has been reset");
+    }
+
+    override fun logEvent(name: String) = Unit
+
+    override fun logEvent(name: String, vararg properties: Param) = Unit
+
+    override fun identify(userId: String) = Unit
+
+    override fun setUserProperty(property: UserProperty) = Unit
+
+    override fun setUserPropertyOnce(property: UserProperty) = Unit
+
+    override fun pushAll() = Unit
+}

app/src/main/java/com/logitanalyticsapp/MainActivity.kt

@@ -25,6 +25,7 @@ class MainActivity : AppCompatActivity() {
         setSupportActionBar(binding.toolbar)
 
         val clients: List<CoreAddon> = listOf(
+            CustomAnalytiksAddon(),
             TimberLocalClient(),
             MixpanelAnalyticsClient(
                 token = "YOUR_TOKEN"