Port Converters

[michael-hawker]

TODO

Base Porting Checklist

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1. Update namespace (to CommunityToolkit.WinUI.Converters)
2. Merge differences from UWP main to WinAppSDK, Uno Platform fork
3. Import original doc or setup new doc
4. Needs a refresh/update, and probably split
5. Samples for Converters #133
   +0
   
6. Brought over existing unit tests from main repo (did not compare or merge with WinUI branch nor update to use our helpers)
7. All brought over tests pass for UWP/WinAppSDK
8. Add more tests for other converters #132
   +0
   
9. Support for WASM via Uno Platform (Had trouble testing due to Unable to move PACKAGE DIST error Tooling-Windows-Submodule#24)
10. ResourceNameToResourceStringConverter definitely needs to be compared
11. StringFormatConverter from first sample worked fine!

Converters

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1. BoolNegationConverter
2. BoolToObjectConverter
3. BoolToVisibilityConverter
4. CollectionVisibilityConverter
5. ColorToDisplayNameConverter
6. DoubleToObjectConverter
7. DoubleToVisibilityConverter
8. EmptyCollectionToObjectConverter
9. EmptyObjectToObjectConverter
10. EmptyStringToObjectConverter
11. FileSizeToFriendlyStringConverter
12. FormatStringConverter
13. ResourceNameTOResourceStringConverter
14. StringFormatConverter
15. StringVisibilityConverter
16. TaskResultConverter
17. TypeToObjectConverter
18. VisibilityToBoolConverter

Notable Changes

• Changed FormatStringConverter to IFormattableToStringConverter to differentiate from StringFormatConverter (too confusing to have such a similar name)

Prerequisites

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1. ColorHelper.ToDisplayName still appears to be missing since before 1.0? microsoft/microsoft-ui-xaml#8287
   feature proposal fix-released team-Markup wct +4

Future Improvements

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1. P2: Central x:Bind helper class that leverages shared logic of converters?

[michael-hawker]

@niels9001 @Arlodotexe initial idea for a template for tracking ports of components, needs some work, but wanted to lay out what I've been doing with the initial test in #1