Tech Debt: Add ability to generate new operator token

OSS (v2) had to pin the UI to the version preceding hiding tokens because it didn't have a way for users to retain their operator token to be used in non-UI operations. In order to keep the UI in OSS up-to-date with Cloud, OSS needs a way to deal with this.

We can deal with this by offering users a UI-based way to get around not having access to their operator token. There is currently API/CLI support for creating new operator tokens. We want users to be able to generate new ones from the UI as that is the documented/favored startup experience for new users.

Creation of the operator token can be similar to that of the all-access token IMO.

_This issue is a higher priority but [another issue is here](https://github.com/influxdata/ui/issues/4667) in case it is low-hanging fruit._