Support /diag and /verbosity in the Execute action

[TaffarelJr]

Lately the GitVersion Execute action has been erroring out a lot in our GitHub workflows -- but it never outputs the exception details. All we get is undefined for the JSON output, and a blocked build.

To facilitate debugging, what would it take to add the following optional input parameters to the Execute action, each resulting in the described changes to the command-line switches:

Input Parameter	Type	Description	Required	Default	Result
enableDiagnositcs	bool	Whether to run GitVersion with additional diagnostic information	false	'false'	determines whether to add the /diag switch or not
verbosity	string	Specifies the amount of information to be displayed [ Quiet | Minimal | Normal | Verbose | Diagnostic ]	false	'Normal'	/verbosity switch is always added to the command-line (for transparency), but is either set to the default value or to whatever the user configures

Command-line switch reference: https://gitversion.net/docs/usage/cli/arguments