Port Eyedropper

[niels9001]

### Base Porting Checklist
- [ ] Component name (to `CommunityToolkit.WinUI.Controls.Eyedropper`)
- [ ] Design refresh
- [ ] Merge differences from UWP main to WinAppSDK / Uno forks
- [ ] Support for WASM via Uno Platform
- [ ] Improve Samples
- [ ] All brought over tests pass for UWP/WinAppSDK

### Known Issues

### Improvements

Notable Changes

N/A

[niels9001]

We might be blocked until we figure out a way to reference the window that is hosting the control, since ApplicationView or CoreWindow cannot be used in WASDK

[Poker-sang]

Maybe use reflection in FrameworkElementExtensions.Mouse.cs as a temporary solution?