doc: document how to apply a token with github-nodejs-bot

Author: legendecas

APPLY_ACCESS_TOKEN.md

@@ -0,0 +1,42 @@
+# Apply for a nodejs-github-bot token
+
+Automation in the `nodejs` GitHub Organization may require access tokens to
+access permission scoped endpoints. In the case of such requirement, the access
+token can be requested to be created under the name of [`@nodejs-github-bot`][].
+
+Creating classic tokens for [`@nodejs-github-bot`][] is not permitted, only
+fine-grained tokens are allowed.
+
+To create a fine-grained access token for [`@nodejs-github-bot`][], follow the
+steps as:
+
+1. Submit a PR to add the requested repo in the registry below, and describe
+   expected permission scopes.
+1. A TSC member or a build WG member (who has access to the [`@nodejs-github-bot`][]
+   account) needs to take following action:
+    1. Create the fine-grained token at https://github.com/settings/personal-access-tokens/new
+       in the account [`@nodejs-github-bot`][], with "Resource owner" to be
+       `nodejs`, "Only select repositories" to be the requested repository,
+       and requested permission scopes only.
+    1. Save the token as a repository secret at `https://github.com/<org>/<repo>/settings/secrets/actions`,
+       do not reveal the token to the anyone in plaintext.
+    1. Land the PR.
+
+Fine-grained tokens created with access to https://github.com/nodejs resources will
+be audited at https://github.com/organizations/nodejs/settings/personal-access-tokens/active.
+
+## Registry
+
+The "repo" is a string of the GitHub `<owner>/<repo>`. Generally, the token should
+only be created for repo in the https://github.com/nodejs organization.
+
+The "Secret name" is a string that the token can be referenced in the GitHub Action
+scripts. Like a token name of `RELEASE_PLEASE_TOKEN` can be accessed from the script
+as `${{ secrets.RELEASE_PLEASE_TOKEN }}`.
+
+Repo                        | Secret name
+---                         | ---
+nodejs/import-in-the-middle | RELEASE_PLEASE_GITHUB_TOKEN
+
+
+[`@nodejs-github-bot`]: https://github.com/nodejs-github-bot