Feature: Add edit with VS Code button

[Lamparter]

📄 Description

Add edit with VS Code button (and various other GitCloneFlyout changes

💭 Motivation and context

(Partially) fixes #188 and #495

---

sequenceDiagram
    participant User
    participant GitCloneFlyout
    participant ExternalApp
    participant Browser
    User->>GitCloneFlyout: Click clone button
    GitCloneFlyout->>ExternalApp: Attempt to open repository
    alt ExternalApp installed
        ExternalApp-->>GitCloneFlyout: Success
        GitCloneFlyout->>GitCloneFlyout: Log success
    else ExternalApp not installed
        ExternalApp-->>GitCloneFlyout: Failure
        GitCloneFlyout->>GitCloneFlyout: Log error
        GitCloneFlyout->>Browser: Open download page
        Browser-->>GitCloneFlyout: Success/Failure
        GitCloneFlyout->>GitCloneFlyout: Log result
    end

Loading

[Lamparter]

I think we should reduce the size of the button as well since there's lots of options

Need to add Code Insiders support as well.

[Lamparter]

Should navigate to VS(Code) download page when those events fail too

[Lamparter]

UWP Community > #dev-help This is probably a stupid error...

[0x5bfa]

@sourcery-ai review