Developers: revamp "Applications" and create "Personal Tokens" settings

[znarf]

The "Applications" (also named "Api Keys") is getting old and we would like to revamp it in the developer settings under a new name: "Personal Tokens".

If possible, we should also add new features like "scope" and "expiration".

[znarf]

I would like to see this project considered for prioritization next sprint (Q4S1).

[flickz]

For the Personal Tokens. I'm making the following assumptions:

• Following the same pattern as the "OAuth App", the personal token should look like

• On clicking "Create personal token" The modal form pops up with the following inputs. Name, Scope (Reusing invoice tag selection component), and Expiration selection

• The API implementation will be reusing existing query/mutation "Application -> API keys" with additional support for scope & expiration.
• The existing "Application -> API keys" will be removed from the menu dropdown.

[Betree]

Would be great to update https://blog.opencollective.com/open-collective-graphql-api-preview/ when we release this; we've shared it in a couple of places.