Refactor addLoginMain() #201

As discussed in #186, we might also want to change the login-name generation from camelcase to the plain login hostname.
I find the latter much more readable and intuitive

blocked by #206

@noerw time to "resolve" conflicts

I think you can split away the token generation out of addLogin into "tasks" package (not in repo jet, but proposed by #184)

@6543 done.
I left token generation in the config package, as it seems reasonable to have it as a member method operating on Login

 			}
 		}
 		t, _, err := client.CreateAccessToken(gitea.CreateAccessTokenOption{Name: tokenName})
 	if token == "" {

 }
 // NormalizeURL normalizes the input with a protocol
 func NormalizeURL(raw string, insecure bool) (*url.URL, error) {