List build config in help

[Telokis]

Doing sw --help only prints

-configuration=<string>        - Set build configuration

regarding the configuration option.

It would be helpful if it also printed the possible configurations available. For example:

-configuration=<string>        - Set build configuration among
                                     - debug, d
                                     - release, r
                                     - releasewithdebuginfo, rwdi
                                   (Default is release.)
                                   Specify multiple using a comma: "d,r"

[egorpugin]

Now it's like:

  -configuration=<string>        - Set build configuration.
                                   Allowed values:
                                       - debug, d
                                       - release, r
                                       - releasewithdebuginformation, releasewithdebinfo, rwdi
                                       - minimalsizerelease, minsizerel, msr
                                   Default is release.
                                   Specify multiple using a comma: "d,r".

Will be available with the next sw update.

[egorpugin]

c04e384