…OneWay<TFrom, TTo> (#1733)

* Fix typo ArgumenException for unit tests

* Add AllowsNullOrDefault handling for BaseConverterOneWay
Fix summary xml doc for ConvertBack of BaseConverterOneWay

* Add BaseConverterOneWay_Tests for new AllowsNullOrDefault

* Implement recommended changes
- Rename test converter to MockConverterOneWay
- Change ArgumentException to ArgumentNullException in BaseConverterOneWay<TFrom, TTo> when disallowing nulls
- Simplify unit test data generation and execution

* Update null check in BaseConverterOneWay<TFrom, TTo>

* Implement recommended changes

- Change check order back to original in BaseConverterOneWay<TFrom, TTo>
- Fix missing first paramName argument for ArgumentNullException in BaseConverterOneWay<TFrom, TTo>
- Refactor BaseConverterOneWay_Tests

* Rename property AllowsNullOrDefault to AllowsNull of BaseConverterOneWay<TFrom, TTo>

* Update IsNullOrEmptyConverter to inherit from BaseConverterOneWay<TFrom, TTo>

* Migrated more converters to base

* Revert compare converter changes

* Fixed unit tests and code review tidy up

* Switch to separate nullable converter base class

* Add null support to BaseConverter

NullableBaseConverter now completes symmetry with NullableBaseConverterOneWay.

Migrate converters to use NullableBaseConverter where possible.

Migrate tests to new approach.

* Remove Null-Forgiving Operator

* Rename converters to start with Base

* Code review improvement

* Add global.json

Ensures .NET 6.0 is the minimum version in use

* `dotnet format`

* Move global.json to root folder

* `dotnet format`

Co-authored-by: Pascal Ried <p.ried@comventure.de>
Co-authored-by: Shaun Lawrence <shaunrlawrence@gmail.com>
Co-authored-by: Pedro Jesus <pedrojesus.cefet@gmail.com>
Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com>

Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com>

* Add SemanticExtensions SetFocus and Announce

* Add Windows Announce implementation

* Update based on feedback

Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com>
Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com>

…1762)

* NullReferenceException thrown in PopupRenderer.SetViewController when using in embedded forms scenario

* remove Null Forgiving Operator

* Fix Null Forgiving Operator

* Fix Null Forgiving Operator

…opup simultaneously #1761 (#1765)

* added main fix for #1761

* added ui not-a-test for #1761

* #1761 test improved

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Automate MauiCompat build, Update MAUI Preview 11

* Run script if MauiCompat project doesn't exist

* Added Source Generator project

* Configure Source Generator project

* Make sure that we will use it just in NETSTANDARD1_0

* removed old build and csproj clean up

* fixed sample app

* added SG dll into Libs folder

* Added SourceGenerator project in all solutions

* Reference the SG dll

Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com>
Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com>

* Fixed drawing outside of DrawingView control

* NormalizePoints

* Fix Samples

* Remove Null Forgiving Operator, `!`

* Fix warnings

Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com>
Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com>
Co-authored-by: Vladislav Antonyuk <vlad.antonyuk@gmail.com>
Co-authored-by: Vladislav Antonyuk <33021114+VladislavAntonyuk@users.noreply.github.com>

Further investigation required but the xiaomi has no "optimal sizes" for preview and is attempting to set the preview size to 4224x3136, which as a guess I would say is a raw resolution not accounting the dpi

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* Add SemanticExtensions SetFocus and Announce

* Add Windows Announce implementation

* Update based on feedback

* Fix SetSemanticFocus for Android

* Revert order of usings to clean up diff

Co-authored-by: Brandon Minnick <13558917+brminnick@users.noreply.github.com>
Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com>
Co-authored-by: Gerald Versluis <gerald.versluis@microsoft.com>