refactor/ncproxy: use haproxy

[0xle0ne]

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[Copilot]

Pull request overview

This PR refactors the ncproxy component to use HAProxy instead of nginx as the underlying proxy server. The change involves replacing nginx-specific configuration templates, updating the service logic, and adapting the Docker setup accordingly.

Key changes:

• Replaced nginx with HAProxy in the nproxy Docker container (Dockerfile and entrypoint)
• Refactored ncproxy configuration generation from nginx to HAProxy syntax
• Introduced a new logger subsystem to receive HAProxy syslog messages via Unix socket
• Updated CLI to use --haproxy-dir flag with backward-compatible --nginx-dir alias

Reviewed changes

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File	Description
docker-compose.yaml	Added image tags for nproxy and ndns services
bin/nproxy/entrypoint.sh	Updated entrypoint script to use HAProxy commands and configuration paths
bin/nproxy/Dockerfile	Replaced nginx packages with haproxy package installation
bin/ncproxy/src/utils/rule.rs	Renamed NginxRuleKind to ProxyRuleKind, updated SSL config handling for HAProxy's combined PEM file requirements, and adjusted upstream backend generation
bin/ncproxy/src/utils/resource.rs	Changed from nginx::add_rule to haproxy::add_rule
bin/ncproxy/src/utils/nginx.rs	Deprecated nginx module, replaced with placeholder comment
bin/ncproxy/src/utils/mod.rs	Replaced nginx module export with haproxy module, updated test configuration
bin/ncproxy/src/utils/haproxy.rs	New HAProxy configuration manager implementing config generation, testing, and reload functionality with multi-file config structure
bin/ncproxy/src/subsystem/mod.rs	Added logger module import
bin/ncproxy/src/subsystem/metric.rs	Added HAProxy httplog format parser as fallback for metric collection
bin/ncproxy/src/subsystem/logger.rs	New Unix datagram socket-based syslog receiver for HAProxy log persistence
bin/ncproxy/src/subsystem/init.rs	Integrated logger spawning and updated to use haproxy_dir
bin/ncproxy/src/subsystem/event.rs	Updated comments and function calls from nginx to haproxy
bin/ncproxy/src/services/rule.rs	Updated rule apply/remove calls from nginx to haproxy functions
bin/ncproxy/src/models/templates/upstream.conf	Converted nginx upstream block to HAProxy backend configuration
bin/ncproxy/src/models/templates/unix_upstream.conf	Converted unix socket upstream to HAProxy backend with unix@ syntax
bin/ncproxy/src/models/templates/stream.conf	Converted nginx stream server to HAProxy frontend with tcp mode
bin/ncproxy/src/models/templates/nginx.conf	Deprecated nginx global template, replaced with reference comment
bin/ncproxy/src/models/templates/http.conf	Converted nginx virtual host configuration to HAProxy ACL-based routing snippets
bin/ncproxy/src/models/templates/haproxy.cfg	New HAProxy global configuration template with syslog socket logging
bin/ncproxy/src/models/template.rs	Updated CONF_TEMPLATE to reference haproxy.cfg
bin/ncproxy/src/models/system.rs	Updated SystemState and EventEmitter to use haproxy_dir and pass state_dir for reload
bin/ncproxy/src/models/store.rs	Renamed NginxRuleKind to ProxyRuleKind, updated directory paths from sites-* to routes-*
bin/ncproxy/src/main.rs	Updated documentation comments from nginx to HAProxy
bin/ncproxy/src/cli.rs	Renamed nginx_dir to haproxy_dir with backward-compatible nginx-dir alias

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