Create Django models for hadith, person, and tag

[rafidka]

To start with, we need the following models:

• Hadith: Storing a single hadith and information about it.
• Person: Storing a single person and information about him/her.
• Tag: Storing a single tag and information about it.

We also need to associate hadith and tags in a many-to-many relationship.

[rafidka]

Initial model created. Will create other issues to make changes. Resolving this.