feat(payment): 支付插件 - 合并 PR #546 易支付适配

Merge pull request #546 from qiuliw. Preserve the original author and current main behavior.

backend/cmd/payment-epay/main.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"net/http"
+	"os"
+	"time"
+
+	paymentplugins "infinite-canvas/backend/payment-plugins"
+)
+
+func main() {
+	provider := paymentplugins.NewEpayProvider(&http.Client{Timeout: 25 * time.Second})
+	if err := paymentplugins.RunRPC(provider, os.Stdin, os.Stdout); err != nil {
+		os.Exit(1)
+	}
+}