feat(parser): Add LiveChatSponsorshipsGiftRedemptionAnnouncement node

[jonz94]

Add a new parser for the live chat node that appears when someone receives a gifted membership.

Example RawNode data:

{
  "liveChatSponsorshipsGiftRedemptionAnnouncementRenderer": {
    "id": "ChwKGkNMcXYzWlhtbFlrREZiSXUxZ0FkeFVjVHF3",
    "timestampUsec": "1729181259381482",
    "timestampText": {
      "simpleText": "2:04:31"
    },
    "authorExternalChannelId": "UCEEweFt_lPNNTiwSU3Z--jg",
    "authorName": {
      "simpleText": "Atama Hikari 光頭 Ch."
    },
    "authorPhoto": {
      "thumbnails": [
        {
          "url": "https://yt4.ggpht.com/KdYuzSiJbBJZv_bmz-TdabkHbactoCrNXnuC7OuBmxsG3jYMZMZZNTRsBimVZB84TDWK4pXLYg=s32-c-k-c0x00ffffff-no-rj",
          "width": 32,
          "height": 32
        },
        {
          "url": "https://yt4.ggpht.com/KdYuzSiJbBJZv_bmz-TdabkHbactoCrNXnuC7OuBmxsG3jYMZMZZNTRsBimVZB84TDWK4pXLYg=s64-c-k-c0x00ffffff-no-rj",
          "width": 64,
          "height": 64
        }
      ]
    },
    "message": {
      "runs": [
        {
          "text": "was gifted a membership by ",
          "italics": true
        },
        {
          "text": "幽浮 UFo K.",
          "bold": true,
          "italics": true
        }
      ]
    },
    "authorBadges": [
      {
        "liveChatAuthorBadgeRenderer": {
          "icon": {
            "iconType": "MODERATOR"
          },
          "tooltip": "Moderator",
          "accessibility": {
            "accessibilityData": {
              "label": "Moderator"
            }
          }
        }
      }
    ],
    "contextMenuEndpoint": {
      "clickTrackingParams": "CAcQ2sMKIhMI5tKTnNG7iQMVSL1WAR2mYxlH",
      "commandMetadata": {
        "webCommandMetadata": {
          "ignoreNavigation": true
        }
      },
      "liveChatItemContextMenuEndpoint": {
        "params": "Q2g0S0hBb2FRMHh4ZGpOYVdHMXNXV3RFUm1KSmRURm5RV1I0VldOVWNYY2FLU29uQ2hoVlF6SmFWMmRuYjI0eFRrOVVNbFJIWVZaVlRYcFpOMEVTQzBoRU9TMTFWRTgxZW05bklBRW9CRElhQ2hoVlEwVkZkMlZHZEY5c1VFNU9WR2wzVTFVeldpMHRhbWM0QWtnQlVDTSUzRA=="
      }
    },
    "contextMenuAccessibility": {
      "accessibilityData": {
        "label": "Chat actions"
      }
    },
    "trackingParams": "CAcQ2sMKIhMI5tKTnNG7iQMVSL1WAR2mYxlH"
  }
}