Incorporate LanguageDsc Module into ComputerManagementDsc

[PlagueHO]

@ld0614 has proposed merging his LanguageDsc module into this one instead of SystemLocaleDsc (which can then be deprecated). This will be done shortly after completing issue #119.

This issue is a placeholder to ensure clarity of the plan is available to the community. See PowerShell/DscResources#288 for more information.

[PlagueHO]

@ld0614 - I'm about to begin the renaming of this resource module over the ComputerManagementDsc, so are you still happy to contribute your module once that one is through?

[ld0614]

Yep, once the module has been renamed I'll submit an initial PR. I'm expecting a number of improvements will be required to bring it up to fully HQRM compliant but I'm eager to kick the review process off 😄