Add vJunos-router support

[tomncarter]

Modified the vJunos-switch template for vJunos-router

• Modified Makefile to support vJunos-router regex.
• Modified launch.py for smbios string for VMX type and lab license.
• Modified launch.py class name for vjunos-router instead of vjunos-switch.

Builds successfully with 23.2R1.15. Can be used in Containerlab with kind vjunos-switch and built image.

[hellt]

thanks @tomncarter !