global: get rid of nonnull gradle hack

Hacking things up via gradle is not right, and package-info.java poses
problems with two modules, so instead we just apply it manually to every
class.

Remember to add this to new classes!

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

ui/src/main/java/com/wireguard/android/fragment/AppListDialogFragment.java

@@ -5,6 +5,8 @@
 
 package com.wireguard.android.fragment;
 
+import com.wireguard.util.NonNullForAll;
+
 import android.app.Activity;
 import android.app.Dialog;
 import android.content.DialogInterface;
@@ -34,6 +36,7 @@ import java9.util.Comparators;
 import java9.util.stream.Collectors;
 import java9.util.stream.StreamSupport;
 
+@NonNullForAll
 public class AppListDialogFragment extends DialogFragment {
 
     private static final String KEY_EXCLUDED_APPS = "excludedApps";

ui/src/main/java/com/wireguard/android/fragment/BaseFragment.java

@@ -5,6 +5,8 @@
 
 package com.wireguard.android.fragment;
 
+import com.wireguard.util.NonNullForAll;
+
 import android.content.Context;
 import android.content.Intent;
 import androidx.databinding.DataBindingUtil;
@@ -32,6 +34,7 @@ import com.wireguard.android.util.ErrorMessages;
  * attached to a {@code BaseActivity}.
  */
 
+@NonNullForAll
 public abstract class BaseFragment extends Fragment implements OnSelectedTunnelChangedListener {
     private static final int REQUEST_CODE_VPN_PERMISSION = 23491;
     private static final String TAG = "WireGuard/" + BaseFragment.class.getSimpleName();

ui/src/main/java/com/wireguard/android/fragment/ConfigNamingDialogFragment.java

@@ -5,6 +5,8 @@
 
 package com.wireguard.android.fragment;
 
+import com.wireguard.util.NonNullForAll;
+
 import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
@@ -26,6 +28,7 @@ import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.Objects;
 
+@NonNullForAll
 public class ConfigNamingDialogFragment extends DialogFragment {
     private static final String KEY_CONFIG_TEXT = "config_text";
 

ui/src/main/java/com/wireguard/android/fragment/TunnelDetailFragment.java

@@ -5,6 +5,8 @@
 
 package com.wireguard.android.fragment;
 
+import com.wireguard.util.NonNullForAll;
+
 import android.os.Bundle;
 import androidx.annotation.Nullable;
 import androidx.databinding.DataBindingUtil;
@@ -30,6 +32,7 @@ import java.util.TimerTask;
  * Fragment that shows details about a specific tunnel.
  */
 
+@NonNullForAll
 public class TunnelDetailFragment extends BaseFragment {
     @Nullable private TunnelDetailFragmentBinding binding;
     @Nullable private Timer timer;

ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.java

@@ -5,6 +5,8 @@
 
 package com.wireguard.android.fragment;
 
+import com.wireguard.util.NonNullForAll;
+
 import android.app.Activity;
 import android.content.Context;
 import androidx.databinding.ObservableList;
@@ -41,6 +43,7 @@ import java.util.Objects;
  * Fragment for editing a WireGuard configuration.
  */
 
+@NonNullForAll
 public class TunnelEditorFragment extends BaseFragment implements AppExclusionListener {
     private static final String KEY_LOCAL_CONFIG = "local_config";
     private static final String KEY_ORIGINAL_NAME = "original_name";

ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.java

@@ -5,6 +5,8 @@
 
 package com.wireguard.android.fragment;
 
+import com.wireguard.util.NonNullForAll;
+
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ContentResolver;
@@ -64,6 +66,7 @@ import java9.util.stream.StreamSupport;
  * Fragment containing a list of known WireGuard tunnels. It allows creating and deleting tunnels.
  */
 
+@NonNullForAll
 public class TunnelListFragment extends BaseFragment {
     public static final int REQUEST_IMPORT = 1;
     private static final int REQUEST_TARGET_FRAGMENT = 2;