[Feature] Add New-VSTeamPullRequest command

[kilasuit]

Currently there is no New-VSTeamPullRequest function

This would be a great addition and would enable more complex automated end to end, branch to branch feature development practices like

PR into Dev Branch -> build completes -> PR is merged -> Merged Branch Builds -> Release runs -> New PR to Test Branch -> PR Completes -> Test Branch Builds -> Test Release Runs > New PR to Prod Branch -> PR Completes -> Prod Branch Builds -> Prod Release Runs

This allows a totally segregated & isolated model between Builds/Releases and the differing stages at which these run at although does add extra complexity

[DarqueWarrior]

What would be the minimum set of parameters to support for a v1? There are a lot of options PR REST API Supporting them all will take a long time and make the function hard to use.

If you feel up to it go ahead and submit a pull request to add it.