Add Synopis/Description/Parameter/Example headings docs for core feature cmdlets

[peterblazejewicz]

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Some of the module's cmldets have a little confusing names I think (Add- where New- would be better). Just by adding some documentation to core cmdlets will help to better play with module using get-help cmldet.

[sayedihashimi]

Thanks I'm review and add comments/edits accordingly.