Add webhook name field to improve webhook identification (#37025) (#37040)

Add an optional Name field to webhooks so users can give them
human-readable labels instead of relying only on URLs. The webhook
overview page now displays names when available, or falls back to the
URL for unnamed webhooks.

Fixes #37025

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

options/locale/locale_en-US.json

@@ -2258,6 +2258,9 @@
   "repo.settings.payload_url": "Target URL",
   "repo.settings.http_method": "HTTP Method",
   "repo.settings.content_type": "POST Content Type",
+  "repo.settings.webhook.name": "Webhook name",
+  "repo.settings.webhook.name_helper": "Optionally give this webhook a friendly name",
+  "repo.settings.webhook.name_empty": "Unnamed Webhook",
   "repo.settings.secret": "Secret",
   "repo.settings.webhook_secret_desc": "If the webhook server supports using secret, you can follow the webhook's manual and fill in a secret here.",
   "repo.settings.slack_username": "Username",