feat: Add SNI checker and certificate manager
Key features:
- Domain-to-IP resolution verification
- Automatic Let's Encrypt certificate acquisition
- Self-signed fallback for domains not pointed to the server
- Updates insecure flag in config.json based on certificate type
- Updates SNI in environment config
- Generates and updates SHA-256 fingerprint
fix(urls): Update URI generator to respect TLS insecure flag
Changes:
- Added insecure parameter to generate_uri() function
- Read TLS insecure flag from config.json
- Set insecure=0 for valid certificates and insecure=1 for self-signed ones
- Updated all URI generation calls to include the insecure parameter
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