🩹 [Patch]: Let `Connect-GitHubApp` be able to pass the context to pipeline

### Describe the change

### Describe the change

Add a -PassThru option for the `Connect-GitHubApp` function.

Allows to run stuff like:

```pwsh
$context = Connect-GitHubApp -Organization PSModule -PassThru
Get-GitHubTeam -Context $context
$context | Disconnect-GitHub
```