Close #70, close #73, close #76.

[3nassale7]

Close #70, close #73, close #76.

BREAKING: this replaces the installation_id and repository inputs with installation_retrieval_mode and installation_retrieval_payload to also support organization and user installation.

It also:

• adds a repositories input to scope the created token to a subset of repositories.
• revokes the created token at the end of the job with a post script.

Originally posted by @tibdex in https://github.com/tibdex/github-app-token/pull/84