New CMD - GCC High - Microsoft o365 and Exchange admin portals addition

[mangle618]

Proposed name of the new command
If this is for a blade within a portal, add the product prefix before the command (e.g. adxxxx).
adming
exg

Description
Title/Description of the command (use the same name shown in the Microsoft portal).
Microsoft 365 Admin Center for GCC High
Exchange for GCC High

Category
Name of the portal this blade lives in or the service name.
Microsoft 365 Admin Center for GCC High
Exchange for GCC High

Url
The url this command should redirect to.
https://portal.office365.us
https://admin.exchange.office365.us