Create the sample schema and prepare seed data

[imranhasanhira]

We need to create the sample data so that api implementation can work

Database Diagram draft link: https://drive.google.com/file/d/1tiFKA1P3sz9UX-qBn0UfovaZ3bP2YMzG/view?usp=share_link

Definition of Done:

1. Add all the relevant tables in https://github.com/bsadd/game-arena/blob/main/backend/src/test/resources/db/coreapp/schema.sql
2. Add necessary amount seed data to https://github.com/bsadd/game-arena/blob/main/backend/src/test/resources/db/coreapp/data.sql

How to verify if those scripts are written correctly:

• Running mvn test will execute those scripts on testcontainer. If the queries are correct, test should success.

[imranhasanhira]

@MahdeeMushfiqueKamal you take the lead along with @Abdus-Samee for this task. It will help in both of your api implementation

[MahdeeMushfiqueKamal]

On it, @imranhasanhira vaia