IMAP Improvements (#558)

* Fixing an issue where scrollviewer overrides a part of template in mail list. Adjusted zoomed out header grid's corner radius.

* IDLE implementation, imap synchronization strategies basics and condstore synchronization.

* Adding iCloud and Yahoo as special IMAP handling scenario.

* iCloud special imap handling.

* Support for killing synchronizers.

* Update privacy policy url.

* Batching condstore downloads into 50, using SORT extension for searches if supported.

* Bumping some nugets. More on the imap synchronizers.

* Delegating idle synchronizations to server to post-sync operations.

* Update mailkit to resolve qresync bug with iCloud.

* Fixing remote highest mode seq checks for qresync and condstore synchronizers.

* Yahoo custom settings.

* Bump google sdk package.

* Fixing the build issue....

* NRE on canceled token accounts during setup.

* Server crash handlers.

* Remove ARM32. Upgrade server to .NET 9.

* Fix icons for yahoo and apple.

* Fixed an issue where disabled folders causing an exception on forced sync.

* Remove smtp encoding constraint.

* Remove commented code.

* Fixing merge conflict

* Addressing double registrations for mailkit remote folder events in synchronizers.

* Making sure idle canceled result is not reported.

* Fixing custom imap server dialog opening.

* Fixing the issue with account creation making the previously selected account as selected as well.

* Fixing app close behavior and logging app close.

Wino.Core.UWP/Wino.Core.UWP.csproj

@@ -24,6 +24,7 @@
 	  <None Remove="Assets\FileTypes\type_rar.png" />
 	  <None Remove="Assets\FileTypes\type_video.png" />
 	  <None Remove="Assets\Providers\Gmail.png" />
+	  <None Remove="Assets\Providers\iCloud.png" />
 	  <None Remove="Assets\Providers\IMAP4.png" />
 	  <None Remove="Assets\Providers\Office 365.png" />
 	  <None Remove="Assets\Providers\Outlook.png" />
@@ -69,6 +70,7 @@
 	  <Content Include="Assets\FileTypes\type_rar.png" />
 	  <Content Include="Assets\FileTypes\type_video.png" />
 	  <Content Include="Assets\Providers\Gmail.png" />
+	  <Content Include="Assets\Providers\iCloud.png" />
 	  <Content Include="Assets\Providers\IMAP4.png" />
 	  <Content Include="Assets\Providers\Office 365.png" />
 	  <Content Include="Assets\Providers\Outlook.png" />
@@ -99,6 +101,7 @@
 		<PackageReference Include="Microsoft.AppCenter.Analytics" />
 		<PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform" />
 		<PackageReference Include="Win2D.uwp" />
+		<PackageReference Include="EmailValidation" />
 	</ItemGroup>
 	<ItemGroup>
 	  <ProjectReference Include="..\Wino.Core.Domain\Wino.Core.Domain.csproj" />