Add ApplicationLayerProbe for HTTP detection on TLS ports

[ic0ns]

Summary

• Implements ApplicationLayerProbe to detect HTTP on TLS ports (fixes Add Property for "Speaks HTTP on TLS Port" #38)
• Adds SPEAKS_HTTP property to track whether server responds to HTTP requests
• Integrates with existing application layer detection framework

Implementation Details

• New probe sends HTTP GET request after successful TLS handshake
• Detects HTTP by checking for valid HTTP response status codes
• Merges results with existing application protocols (e.g., from DTLS probe)
• Follows existing probe patterns and conventions

Changes

• Added SPEAKS_HTTP to TlsAnalyzedProperty enum
• Added APPLICATION_LAYER to TlsProbeType enum
• Created ApplicationLayerProbe class with HTTP detection logic
• Registered probe in TlsServerScanner
• Added property to rating influencers XML
• Added unit tests for the new probe

Test Plan

• Code compiles successfully
• Unit tests written and passing
• Spotless formatting applied
• Integration testing with real HTTPS servers
• Verify probe correctly identifies HTTP-speaking TLS services
• Test with non-HTTP TLS services to ensure no false positives

Closes #38