fix(*): Vendored project dependencies

vendor/code.gitea.io/sdk/gitea/agent.go

@@ -0,0 +1,38 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+//go:build !windows
+
+package gitea
+
+import (
+	"fmt"
+	"net"
+	"os"
+
+	"golang.org/x/crypto/ssh/agent"
+)
+
+// hasAgent returns true if the ssh agent is available
+func hasAgent() bool {
+	if _, err := os.Stat(os.Getenv("SSH_AUTH_SOCK")); err != nil {
+		return false
+	}
+
+	return true
+}
+
+// GetAgent returns a ssh agent
+func GetAgent() (agent.Agent, error) {
+	if !hasAgent() {
+		return nil, fmt.Errorf("no ssh agent available")
+	}
+
+	sshAgent, err := net.Dial("unix", os.Getenv("SSH_AUTH_SOCK"))
+	if err != nil {
+		return nil, err
+	}
+
+	return agent.NewClient(sshAgent), nil
+}