Update RPC server usage help with correct method signatures

- Remove ci-token (now just use token for both UnifiedLoginToken and CIToken)
- Add client-auth-token and sc-sast-url for SC-SAST authentication
- Fix authentication note to reflect current implementation

Co-authored-by: rsenden <8635138+rsenden@users.noreply.github.com>

Author: Copilot

fcli-core/fcli-util/src/main/resources/com/fortify/cli/util/i18n/UtilMessages.properties

@@ -123,11 +123,12 @@ fcli.util.rpc-server.start.usage.description = The fcli JSON-RPC server provides
   %n      - url (string, required): SSC URL\
   %n      - user (string): Username for user/password auth\
   %n      - password (string): Password for user/password auth\
-  %n      - token (string): UnifiedLoginToken\
-  %n      - ci-token (string): CIToken for CI/CD\
+  %n      - token (string): UnifiedLoginToken or CIToken\
+  %n      - client-auth-token (string, optional): SC-SAST client auth token\
+  %n      - sc-sast-url (string, optional): SC-SAST controller URL\
   %n      - expire-in (string): Token expiration (e.g., "1d", "8h")\
   %n      - insecure (boolean): Allow insecure connections\
-  %n    Note: Requires one of (user+password), token, or ci-token\
+  %n    Note: Requires one of (user+password) or token\
   %n\
   %n  - fcli.ssc.logout: Logout from SSC session\
   %n\