keep the /username and /password switch

I have many different versions of Analyst (portable) installed on my pc and I have to login to them simultaneously and frequently to diagnose customers (using different versions) reported issues.

The /username and /password switch is very useful for me to start Analyst without manually entering username/password, it would be very helpful to keep these switches.

It needs more clicks to login to Analyst after this change.

SPOT_sfire-analyst_14.4.0_relnotes.pdf

TS-77285 14.4.0 The command line switches /username and /password have been deprecated, because BASIC authentication has been deprecated on the server.

Deprecated since Spotfire 14.4.0.

PS, in order to use /username & /password switches the server configuration security.oauth2.server.password-grant.enabled must be changed to true.