feat: add repository webhook management (#798)

## Summary

This PR adds support for organization-level and global webhooks in the tea CLI tool.

## Changes Made

### Organization Webhooks
- Added `--org` flag to webhook commands to operate on organization-level webhooks
- Implemented full CRUD operations for org webhooks (create, list, update, delete)
- Extended TeaContext to support organization scope

### Global Webhooks
- Added `--global` flag with placeholder implementation
- Ready for when Gitea SDK adds global webhook API methods

### Technical Details
- Updated context handling to support org/global scopes
- Modified all webhook subcommands (create, list, update, delete)
- Maintained backward compatibility for repository webhooks
- Updated tests and documentation

## Usage Examples

```bash
# Repository webhooks (existing)
tea webhooks list
tea webhooks create https://example.com/hook --events push

# Organization webhooks (new)
tea webhooks list --org myorg
tea webhooks create https://example.com/hook --org myorg --events push,pull_request

# Global webhooks (future)
tea webhooks list --global
```

## Testing
- All existing tests pass
- Updated test expectations for new descriptions
- Manual testing of org webhook operations completed

Closes: webhook management feature request
Reviewed-on: https://gitea.com/gitea/tea/pulls/798
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Ross Golder <ross@golder.org>
Co-committed-by: Ross Golder <ross@golder.org>

cmd/webhooks.go

@@ -0,0 +1,89 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	stdctx "context"
+	"fmt"
+
+	"code.gitea.io/tea/cmd/webhooks"
+	"code.gitea.io/tea/modules/context"
+	"code.gitea.io/tea/modules/print"
+	"code.gitea.io/tea/modules/utils"
+
+	"code.gitea.io/sdk/gitea"
+	"github.com/urfave/cli/v3"
+)
+
+// CmdWebhooks represents the webhooks command
+var CmdWebhooks = cli.Command{
+	Name:        "webhooks",
+	Aliases:     []string{"webhook", "hooks", "hook"},
+	Category:    catEntities,
+	Usage:       "Manage webhooks",
+	Description: "List, create, update, and delete repository, organization, or global webhooks",
+	ArgsUsage:   "[webhook-id]",
+	Action:      runWebhooksDefault,
+	Commands: []*cli.Command{
+		&webhooks.CmdWebhooksList,
+		&webhooks.CmdWebhooksCreate,
+		&webhooks.CmdWebhooksDelete,
+		&webhooks.CmdWebhooksUpdate,
+	},
+	Flags: append([]cli.Flag{
+		&cli.StringFlag{
+			Name:  "repo",
+			Usage: "repository to operate on",
+		},
+		&cli.StringFlag{
+			Name:  "org",
+			Usage: "organization to operate on",
+		},
+		&cli.BoolFlag{
+			Name:  "global",
+			Usage: "operate on global webhooks",
+		},
+		&cli.StringFlag{
+			Name:  "login",
+			Usage: "gitea login instance to use",
+		},
+		&cli.StringFlag{
+			Name:    "output",
+			Aliases: []string{"o"},
+			Usage:   "output format [table, csv, simple, tsv, yaml, json]",
+		},
+	}, webhooks.CmdWebhooksList.Flags...),
+}
+
+func runWebhooksDefault(ctx stdctx.Context, cmd *cli.Command) error {
+	if cmd.Args().Len() == 1 {
+		return runWebhookDetail(ctx, cmd)
+	}
+	return webhooks.RunWebhooksList(ctx, cmd)
+}
+
+func runWebhookDetail(_ stdctx.Context, cmd *cli.Command) error {
+	ctx := context.InitCommand(cmd)
+	client := ctx.Login.Client()
+
+	webhookID, err := utils.ArgToIndex(cmd.Args().First())
+	if err != nil {
+		return err
+	}
+
+	var hook *gitea.Hook
+	if ctx.IsGlobal {
+		return fmt.Errorf("global webhooks not yet supported in this version")
+	} else if len(ctx.Org) > 0 {
+		hook, _, err = client.GetOrgHook(ctx.Org, int64(webhookID))
+	} else {
+		hook, _, err = client.GetRepoHook(ctx.Owner, ctx.Repo, int64(webhookID))
+	}
+	if err != nil {
+		return err
+	}
+
+	print.WebhookDetails(hook)
+	return nil
+}