fix(android): add missing import (#130)

This PR adds a missing import.

Close #134 

Related to #128

```
npm i @capacitor-community/[email protected]
```

Author: robingenz

android/src/main/java/getcapacitor/community/contacts/ContactsPlugin.java

@@ -8,6 +8,7 @@
 import androidx.activity.result.ActivityResult;
 import com.getcapacitor.JSArray;
 import com.getcapacitor.JSObject;
+import com.getcapacitor.Logger;
 import com.getcapacitor.PermissionState;
 import com.getcapacitor.Plugin;
 import com.getcapacitor.PluginCall;
@@ -27,6 +28,8 @@
 )
 public class ContactsPlugin extends Plugin {
 
+    public static final String TAG = "Contacts";
+
     private Contacts implementation;
 
     @Override