feat: add automatic alembic config generation and cryptography depend…

[SidPatel151]

Description

This PR adds automatic Alembic configuration generation and adds the required cryptography dependency for key management operations.

Changes

• Added generate_alembic_config.py script to automatically create alembic.ini
• Modified Dockerfile to generate alembic.ini during build
• Added cryptography>=42.0.0 to pyproject.toml for X25519 and Ed25519 operations

Why

• Eliminates manual alembic.ini creation
• Ensures consistent configuration across environments
• Adds missing cryptography dependency required by key_manager.py

Testing

• Run docker-compose up --build -d to verify alembic.ini generation
• Verify database migrations work correctly
• Check that key management operations work with the new cryptography dependency

Notes

• The alembic.ini is now generated automatically during Docker build
• No manual configuration needed for new deployments

[imaxxs]

@SidPatel151 This is interesting that you added script to dynamically add the alembic.ini file. I am wondering what was your thought here? vs just creating a new alembic.ini and using it.

[SidPatel151]

I wanted to create it automatically, as at this time, I didn't notice the alembic.ini file in the gitignore. I also remember talking to you about making it autonomous to do. It's more efficient in my opinion as it creates the whole ini file for you when doing all the installations, instead oyu having to manually copy/paste it in or type one out.