[Samples] Allow Horizontal/Vertical Scrolling and Sizing requirements for Samples

### Describe the bug

Based on issues discovered trying to clean-up the design of the sample app in CommunityToolkit/Labs-Windows#356.

We need to allow some samples to control their:
- [ ] min/max sizing of space for the sample display
- [ ] whether they horizontally scroll their viewport
- [ ] whether they vertically scroll their viewport

### Steps to reproduce

```text
N/A
```

### Expected behavior

See CanvasLayout, we need to show a horizontally and vertically scrollable space for the component.

### Screenshots

_No response_

### Code Platform

- [ ] UWP
- [ ] WinAppSDK / WinUI 3
- [ ] Web Assembly (WASM)
- [ ] Android
- [ ] iOS
- [ ] MacOS
- [ ] Linux / GTK

### Windows Build Number

- [ ] Windows 10 1809 (Build 17763)
- [ ] Windows 10 1903 (Build 18362)
- [ ] Windows 10 1909 (Build 18363)
- [ ] Windows 10 2004 (Build 19041)
- [ ] Windows 10 20H2 (Build 19042)
- [ ] Windows 10 21H1 (Build 19043)
- [ ] Windows 11 21H2 (Build 22000)
- [ ] Other (specify)

### Other Windows Build number

_No response_

### App minimum and target SDK version

- [ ] Windows 10, version 1809 (Build 17763)
- [ ] Windows 10, version 1903 (Build 18362)
- [ ] Windows 10, version 1909 (Build 18363)
- [ ] Windows 10, version 2004 (Build 19041)
- [ ] Other (specify)

### Other SDK version

_No response_

### Visual Studio Version

_No response_

### Visual Studio Build Number

_No response_

### Device form factor

_No response_

### Additional context

_No response_

### Help us help you

Yes, but only if others can assist.

まず CanvasLayout sample と関連する CommunityToolkit/Labs-Windows#356 の議論を確認し、sample の表示コンテキストを理解します。sample が表示サイズの最小値と最大値、および水平方向または垂直方向の viewport のスクロールをどのように指定するかを定義します。対象となる sample について、sample アプリがこれらの要件をサポートすれば完了です。

索引モデルが issue の本文から書いたものです。