Update C# examples with the new driver namespace

## Description

As the driver namespace changed from `AltTesterUnitySDK.Driver` to `AltTesterSDK.Driver` for C#, we need to make updates on our example projects as well:

- [x] https://github.com/alttester/EXAMPLES-CSharp-Standalone-DragonCrasher
- [x] https://github.com/alttester/EXAMPLES-CSharp-Standalone-AltTrashCat
- [x] https://github.com/alttester/EXAMPLES-CSharp-Android-AltTrahCat
- [x] https://github.com/alttester/EXAMPLES-CSharp-iOS-AltTrashCat
- [x] https://github.com/alttester/EXAMPLES-NewInputSystem--CoinCollector-CSharp
- [x] https://github.com/alttester/EXAMPLES-NewInputSystem--LeanTouch-CSharp
- [x] https://github.com/alttester/EX-NIS-RollABall-CSharp

## Mocks

## Additional info

❗ **IMPORTANT**: the changes should not be merged to the `main`/`master` branch for each project until the `2.2.4` release or right after the release)