2. Fix result not update after get data from database
3. Remove null value assign for display list

1. Remove testing code
2. Enhance debug message

2. Add testing code in Database.save() and disable testing code in main

2. Initializing in main
3. Create Model
4. Generate TypeAdapter
5. Testing

* `hive_flutter` generate extra ios files

1. Check if character with same name exist
2. Remove noused code

1. Load multiple pages of characters
2. Loop for 100 above valid data

1. Download API data
2. Filter invalid data
3. Convert json obj into Characters
4. Display data