Implement DICOM TLS/SSL Support

[Ansh5748]

This PR adds TLS/SSL support to the DICOM server, enhancing security for medical data transmission.

Changes

• Added TLS configuration to DICOM server (dicomhawk.py)
• Created certificate management functionality
• Implemented TLS status monitoring page
• Added secure connection logging
• Updated Docker configuration for TLS support
• Added proper error handling for TLS connections

Testing

• Verified TLS connections using test client
• Confirmed standard connections still work
• Tested certificate validation
• Verified TLS status page displays correct information

Screenshots

This implementation follows healthcare security best practices and maintains compatibility with standard DICOM clients.
Closes #35
@gtheodoridis