Feat/refactor incident helper with integrations

[gcharest]

Summary | Résumé

• Refactor the incident helper (used with /sre incident command) to use generic Google integrations modules instead of the catchall google_drive module (became a very large file with lots of process specific configuration)
• Introduce the Google Sheets module
• Add typing annotations when possible

Additional fixes:

• Refactoring required some updates to the execute api function, namely supporting the fields argument as a supported parameter in the api calls.
• Google Drive and Docs also were updated to support fields as an arg
• Delegated user email has been added to functions with write permissions so that they can possibly be executed by using the caller's identity instead of the bot's, thus inheriting their permissions in Google Workspace