feat(alerting): Implement GitHub alerting provider

vendor/github.com/google/go-github/v48/github/apps_hooks.go

@@ -0,0 +1,48 @@
+// Copyright 2021 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"context"
+)
+
+// GetHookConfig returns the webhook configuration for a GitHub App.
+// The underlying transport must be authenticated as an app.
+//
+// GitHub API docs: https://docs.github.com/en/rest/apps#get-a-webhook-configuration-for-an-app
+func (s *AppsService) GetHookConfig(ctx context.Context) (*HookConfig, *Response, error) {
+	req, err := s.client.NewRequest("GET", "app/hook/config", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	config := new(HookConfig)
+	resp, err := s.client.Do(ctx, req, &config)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return config, resp, nil
+}
+
+// UpdateHookConfig updates the webhook configuration for a GitHub App.
+// The underlying transport must be authenticated as an app.
+//
+// GitHub API docs: https://docs.github.com/en/rest/apps#update-a-webhook-configuration-for-an-app
+func (s *AppsService) UpdateHookConfig(ctx context.Context, config *HookConfig) (*HookConfig, *Response, error) {
+	req, err := s.client.NewRequest("PATCH", "app/hook/config", config)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	c := new(HookConfig)
+	resp, err := s.client.Do(ctx, req, c)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return c, resp, nil
+}