UI update: Snackbars + NRO Metadata

This UI updates adds Snackbar notifications for actions and extracts metadata in the form of an icon, name and author from NRO files to display in the game list.

Co-Authored-By: Ryan Teal <zephyren25@users.noreply.github.com>

app/src/main/java/gq/cyuubi/lightswitch/FileAdapter.java

@@ -0,0 +1,104 @@
+package gq.cyuubi.lightswitch;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+
+import java.io.File;
+import java.util.ArrayList;
+
+class DataModel {
+    File file;
+    TitleEntry meta;
+
+    int index;
+
+    public DataModel(File file) {
+        this.file = file;
+        index = file.getName().lastIndexOf(".");
+        meta = NroMeta.GetNroTitle(getPath());
+    }
+
+    public Bitmap getIcon() {
+        return meta.getIcon();
+    }
+
+    public String getTitle() {
+        return meta.getName() + " (" + getType() + ")";
+    }
+
+    public String getFileName() {
+        return file.getName();
+    }
+
+    public String getAuthor() {
+        return meta.getAuthor();
+    }
+
+    public String getType() {
+        return file.getName().substring(index + 1).toUpperCase();
+    }
+
+    public String getPath() {
+        return file.getAbsolutePath();
+    }
+}
+
+public class FileAdapter extends ArrayAdapter<DataModel> implements View.OnClickListener {
+
+    Context mContext;
+    private ArrayList<DataModel> dataSet;
+
+    public FileAdapter(Context context, @NonNull ArrayList<DataModel> data) {
+        super(context, R.layout.file_item, data);
+        this.dataSet = new ArrayList<>();
+        this.mContext = context;
+    }
+
+    @Override
+    public void onClick(View v) {
+
+        int position = (Integer) v.getTag();
+        Object object = getItem(position);
+        DataModel dataModel = (DataModel) object;
+        switch (v.getId()) {
+            case R.id.icon:
+
+                break;
+        }
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        DataModel dataModel = getItem(position);
+        ViewHolder viewHolder;
+        if (convertView == null) {
+            viewHolder = new ViewHolder();
+            LayoutInflater inflater = LayoutInflater.from(getContext());
+            convertView = inflater.inflate(R.layout.file_item, parent, false);
+            viewHolder.icon = convertView.findViewById(R.id.icon);
+            viewHolder.txtTitle = convertView.findViewById(R.id.text_title);
+            viewHolder.txtSub = convertView.findViewById(R.id.text_subtitle);
+            convertView.setTag(viewHolder);
+        } else {
+            viewHolder = (ViewHolder) convertView.getTag();
+        }
+        viewHolder.txtTitle.setText(dataModel.getTitle());
+        viewHolder.txtSub.setText(dataModel.getAuthor());
+        viewHolder.icon.setImageBitmap(dataModel.getIcon());
+        return convertView;
+    }
+
+    private static class ViewHolder {
+        ImageView icon;
+        TextView txtTitle;
+        TextView txtSub;
+    }
+}