Add interactive CLI configuration setup for deployment

[anshikasharmaa1517]

customizer/customizer.py:

• Interactive Python script that guides users through the setup process
• Automatically generates cryptographically secure secrets for JWT authentication
• Color-coded prompts with default values and validation

install.sh:

• Complete installation script with dependency checks
• Automatically creates necessary storage directories

To run installer script :
Use ./install.sh

fixes #74