Added Color Picker for New Notes Screen

Added Color Viewer on NotesScreen
Added LocalStorage sync for Offline Usage.
Restructured Firestore Database
Fixed some minor Bugs
Planned to fix delete functionality.

Author: srvraj311

Diff for: app/src/main/java/com/srvraj311/NoteScreen/RecyclerAdapter.java

@@ -122,8 +122,7 @@ public boolean onLongClick(View v) {
         holder.cardView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                //delete(position);
-                Intent intent = new Intent(NewNoteAdd.class);
+                delete(position);
             }
         });