feat: add multi-platform build support and protocol config option

- Add Windows and Darwin (macOS) build targets to GoReleaser configuration
  alongside existing Linux support for amd64 and arm64 architectures
- Add 'proto' field to example configuration to allow explicit protocol
  specification (http/https)

This enables cross-platform distribution and provides more flexibility
in configuring the proxy protocol.

Author: hightemp

.goreleaser.yaml

@@ -18,6 +18,8 @@ builds:
       # - -linkmode external -extldflags '-static'
     goos:
       - linux
+      - windows
+      - darwin
     goarch:
       - amd64
       - arm64

config.example.yaml

@@ -1,5 +1,6 @@
 proxy_addr: 0.0.0.0:9999
 username: user
 password: pass
+proto: http
 cert_path: ./cert.pem
 key_path: ./key.pem