Quick(er) assignment of labels (similar to Gmail)

[trozman]

Current state in desktop app: to assign labels to emails, 3 click are needed (Click label icon or L, select label, Apply).
To make labels more similar to 'stars' functionality in GMail, please reduce the number of clicks to assign labels to emails.

For example: right click on email, label meni appears, select label. Or, hover over email, label menu appears, select label

That would mimic the Gmail workflow (one click to 'star' email') and make transition GMail->Tuta easier.