Feat: OAuth2: Show details of both token request and user request in the Timeline

[pietrygamat]

Description

This PR builds on top of both #2077 and #2164 . It enhances the timeline to show the details of both OAuth2 token request and user defined request.
This is done because:

• Since feat: Improvements to OAuth2-related user interface #2077 the token request is executed in the background, and perhaps skipped, if bruno has a token cached, so there is no feedback to the user about what requests are executed
• Since feat: OAuth 2.0 Client Credentials Basic Auth #2164 the token request works in two modes (credentials in basic auth header or request body) - this is another variable that we want the user to have better visibility of

When token request is executed, both requests are logged:

When using cached credentials (previously obtained access_token), only user request is shown:

Also, fixes #1933

[leikoilja]

this is really needed