[SSO] New user provision flow

[vincentsalucci]

Objective

Currently, when a new bitwarden/org user is created, they are given a status of accepted. This can create issues for organizations trying to confirm the same user (which can't happen until they've set their master password). To alleviate the issue, change new user's orgUser status to invited until after they've set a master password. Pass through the necessary information for the 2fa and set-password components.

Code Changes

• LoginSsoPage.xaml.cs: Passed already existing _vm.orgIdentifier into the constructor for both the 2fa and SetPassword pages.
• SetPasswordPage.xaml.cs: Added orgIdentifier to the constructor. Saved parameter value to the underlying view model.
• SetPasswordPageViewModel.cs: Created OrgIdentifier property and assigned value to the SetPasswordRequest OrgIdentifier field.
• TwoFactorPage.xaml.cs: Added orgIdentifier to the constructor and created member variable for passing along the result to the SetPasswordPage
• SetPasswordRequest.cs: Added OrgIdentifier string to the request object.

[vincentsalucci]

Merged from master because this branch was over 2 weeks stale.