add CLI command to register runner tokens (#23762)

This is a CLI command to generate new tokens for the runners to register
with

Fix https://github.com/go-gitea/gitea/issues/23643

---------

Co-authored-by: delvh <dev.lh@web.de>

modules/private/actions.go

@@ -0,0 +1,27 @@
+// Copyright 2023 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package private
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/modules/setting"
+)
+
+// Email structure holds a data for sending general emails
+type GenerateTokenRequest struct {
+	Scope string
+}
+
+// GenerateActionsRunnerToken calls the internal GenerateActionsRunnerToken function
+func GenerateActionsRunnerToken(ctx context.Context, scope string) (string, ResponseExtra) {
+	reqURL := setting.LocalURL + "api/internal/actions/generate_actions_runner_token"
+
+	req := newInternalRequest(ctx, reqURL, "POST", GenerateTokenRequest{
+		Scope: scope,
+	})
+
+	resp, extra := requestJSONResp(req, &responseText{})
+	return resp.Text, extra
+}