v11: Decouple dependencies (#12907)

* Move core dependencies and MSBuild targets from Umbraco.Cms to Umbraco.Cms.Targets

* Re-add appsettings.Tests.json

* Include appsettings-schema.json

* Use .NET 7.x in CodeQL build

* Fix duplicate Directory.Build.props import

* Decouple ImageSharp/ImageSharp.Web implementations

* Further decouple SqlServer implementation

* Add SupportedImageFileTypes to IImageDimensionExtractor

* Update descriptions

* Update project metadata

* Re-enable package validation

* Add embedded package icon

* Move ContinuousIntegrationBuild to build script

* Move shared properties to root Directory.Build.props

* Fix GetInstallState throwing exception when default provider isn't configured

* Remove redundant PackageRequireLicenseAcceptance and update version to 11.0.0-rc1

* Update build script

* Remove LangVersion preview

* Disable app-local ICU for MacOS integration test

* Disable app-local ICU for all integration tests

* Fix RuntimeState_Run test assertion

* Update projects and build script to require Node.js 16.17 (latest LTS)

* Remove app-local ICU from unit tests

* Add missing project reference

* Generate XML documentation files

* Expose management API in Web.UI project

* Update .NET 7 dependencies to RC1

* Update package-lock.json files

* Downgrade Cypress version

Author: ronaldbarendse

.github/New BackOffice - README.md

@@ -1,13 +1,13 @@
-# New Backoffice
+# New backoffice
 
 > **Warning**:
-> This is an early WIP, and is set not to be packable since we don't want to release this yet. There will be breaking changes in these projects
+> This is an early WIP and is set not to be packable since we don't want to release this yet. There will be breaking changes in these projects.
 
-This solution folder contains the projects for the new BackOffice. If you're looking to fix or improve the existing CMS, this is not the place to do it, although we do very much appreciate your efforts.
+This solution folder contains the projects for the new backoffice. If you're looking to fix or improve the existing CMS, this is not the place to do it, although we do very much appreciate your efforts.
 
 ### Project structure
 
-Since the new backoffice API is still very much a work in progress we've created new projects for the new backoffice API:
+Since the new backoffice API is still very much a work in progress, we've created new projects for the new backoffice API:
 
 * Umbrao.Cms.ManagementApi - The "presentation layer" for the management API
 * "New" versions of existing projects, should be merged with the existing projects when the new API is released:

.gitignore

@@ -104,5 +104,6 @@ cypress.env.json
 /tests/Umbraco.Tests.UnitTests/[Uu]mbraco/[Dd]ata/TEMP/
 
 # Ignore auto-generated schema
+/src/Umbraco.Cms.Targets/appsettings-schema.json
 /src/Umbraco.Web.UI/appsettings-schema.json
-/src/Umbraco.Cms/appsettings-schema.json
+/tests/Umbraco.Tests.Integration/appsettings-schema.json