Add support for personal_access_token_request webhook event type

[joaopenteado]

This PR adds support for the personal_access_token_request webhook event.

This event occurs when there is activity relating to a request for a fine-grained personal access token to access resources that belong to a resource owner that requires approval for token access.

[codecov]

Codecov Report

Merging #2826 (722192c) into master (9f7124c) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 722192c differs from pull request most recent head fe0949f. Consider uploading reports for the commit fe0949f to get more accurate results

@@           Coverage Diff           @@
##           master    #2826   +/-   ##
=======================================
  Coverage   98.06%   98.06%           
=======================================
  Files         136      136           
  Lines       12279    12281    +2     
=======================================
+ Hits        12041    12043    +2     
  Misses        162      162           
  Partials       76       76           

Impacted Files	Coverage Δ
github/event_types.go	100.00% <ø> (ø)
github/messages.go	100.00% <ø> (ø)
github/event.go	100.00% <100.00%> (ø)

[gmlewis]

Thank you, @joaopenteado !
Just a few tweaks please, then we will be ready for a second LGTM+Approval from any other contributor to this repo before merging.

[joaopenteado]

Thanks for the very quick response, @gmlewis!
I've just committed the documentation changes requested. Let me know if you want any additional changes.

[gmlewis]

Thank you, @joaopenteado !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[joaopenteado]

@gmlewis upon further testing, I've actually found that this webhook delivers an map of permissions in the API. This isn't very well documented IMO but could be inferred I guess. I've updated the event type to fix this. Here's an excerpt from a webhook event I received from GitHub during integration testing:

{
  "action": "created",
  "personal_access_token_request": {
    "id": 11233,
    "owner": { /* ... */ },
    "repository_selection": "all",
    "repository_count": null,
    "repositories": null,
    "permissions_added": {
      "organization": {
        "organization_announcement_banners": "write",
        "organization_events": "read"
      },
      "repository": {
        "codespaces_lifecycle_admin": "read",
        "metadata": "read",
        "security_events": "write"
      }
    },
    "permissions_upgraded": {},
    "permissions_result": {
      "organization": {
        "organization_announcement_banners": "write",
        "organization_events": "read"
      },
      "repository": {
        "codespaces_lifecycle_admin": "read",
        "metadata": "read",
        "security_events": "write"
      }
    },
    "created_at": "2023-07-07T00:37:57+09:00",
    "token_expired": false,
    "token_expires_at": "2023-08-05T15:37:56Z",
    "token_last_used_at": null
  },
  "organization": { /* ... */ },
  "sender": { /* ... */},
  "installation": {
    "id": 1111111,
    "node_id": "xxxxxxxxxxxxxx"
  }

[gmlewis]

Thank you, @joaopenteado !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[liaodaniel]

LGTM

[gmlewis]

Thank you, @liaodaniel !
Merging.