feat: update rework

[afonsojramos]

Following the discussions on #2528 and on Discord, this PR removes the --check-update flag and makes the upgrade/update semi-chainable. Also renamed the old update to refresh as it felt that it was the word that made the most sense based on what the function did and the PoV of the user.

[rxri]

we need to keep in mind that it will require changing section about upgrading spicetify in docs

[SunsetTechuila]

reading is hard

[afonsojramos]

https://github.com/spicetify/spicetify-cli/blob/80b69628dea963ebff73ba6734967ae024b4efb4/jsHelper/spicetifyWrapper.js#L2370

https://github.com/spicetify/spicetify-cli/blob/80b69628dea963ebff73ba6734967ae024b4efb4/jsHelper/spicetifyWrapper.js#L2289

As of this PR upgrade will continue working, but I suppose it won't hurt changing that!

[rxri]

i believe he meant these lines:
https://github.com/spicetify/spicetify-cli/blob/80b69628dea963ebff73ba6734967ae024b4efb4/jsHelper/spicetifyWrapper.js#L2372-L2373

change was reverted