Remove- commands should prompt for confirmation

[jpomfret]

Functions that remove something should have ConfirmImpact set to High.

I noticed that Remove-GitHubRepository doesn't prompt for confirmation, these are also missing that:

• Remove-GithubAssignee
• Remove-GitHubComment
• Remove-GitHubIssueLabel
• Remove-GitHubLabel
• Remove-GitHubMilestone
• Remove-GitHubRepository

[HowardWolosky]

Indeed. And similar to the cl that introduced this concept, there should also be an example added that shows how to avoid the prompting as well.

PowerShellForGitHub/GitHubRepositories.ps1

Lines 503 to 505 in 536b762

	.EXAMPLE
	Get-GitHubRepository -Uri https://github.com/octocat/hello-world | Rename-GitHubRepository -NewName hello-again-world -Confirm:$false
	Get the repository at https://github.com/octocat/hello-world and then rename it https://github.com/octocat/hello-again-world. Will not prompt for confirmation, as -Confirm:$false was specified.