Provide feedback when interacting with PR files

Issue Type: Feature Request

Hello.
This extensionis super nice, it is super useful to be able to interact with PR direcrtly from VSCode.

There is one small detail that you may not notice if you are always on a good internet connection, but it becomes noticeable on slow ones. When you interact with any file on the PR, for example you flag it as viewed, there is no feedback to tell you if something is loading, or even if you clicked the button. It will be very nice to have some visual indication.

Regards

Extension version: 0.34.1
VS Code version: Code 1.63.2 (899d46d82c4c95423fb7e10e68eba52050e30ba3, 2021-12-15T09:37:28.172Z)
OS version: Darwin x64 20.6.0
Restricted Mode: No

Inizia tracciando le interazioni con i file delle pull request in VS Code, soprattutto l’azione che contrassegna un file come visualizzato, e analizza come viene rappresentato il suo stato asincrono. Aggiungi un feedback visibile per lo stato di caricamento o di clic, quindi verifica che l’interazione con i file delle PR fornisca una conferma chiara al completamento dell’operazione.