Add NAT traversal configuration options for XTCP proxies and visitors. Support disabling assisted addresses to avoid using slow VPN connections during NAT hole punching.
Enhanced OIDC client configuration with support for custom TLS certificate verification and proxy settings. Added trustedCaFile, insecureSkipVerify, and proxyURL options for OIDC token endpoint connections.
Added detailed Prometheus metrics with proxy_counts_detailed metric that includes both proxy type and proxy name labels, enabling monitoring of individual proxy connections instead of just aggregate counts.
