Add JWT Auth support in bin/solr

Once SOLR-12121 gets in, we should add support to bin/solr start scripts so they can authenticate with Solr using a JWT token. A preferred way would perhaps be through solr.in.sh and add new

SOLR_AUTH_TYPE=token
SOLR_AUTHENTICATION_OPTS=-DjwtToken=....

A disadvantage with this method is that the user needs to know how to obtain the token, and the token needs to be long-lived. A more sophisticated way would be a bin/solr auth login command that opens a browser window with the IDP login screen and saves the short-lived access token and optionally refresh token, in the file system.