Centralised NuGet packages (#15293)

* Moved to centralized nuget packages

* Handle JsonSchema

* Change PackageReference to PackageVersion

* Opt out of central package management for mangement api (at least for versions less than 14) and the UI project

* ManagePackageVersionsCentrally = false

* Change folder acceptance tests are build, to avoid reading the test Directory.Packages.props

* Change folder acceptance tests are build, to avoid reading the test Directory.Packages.props

* change working directory

* workingDirectory

* Force the template to use local nuget packages

* Force the template to use local nuget packages

* clean up

* added wait on

* added wait on

templates/UmbracoProject/UmbracoProject.csproj

@@ -4,6 +4,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Umbraco.Cms.Web.UI</RootNamespace>
+    <ManagePackageVersionsCentrally>false</ManagePackageVersionsCentrally>
   </PropertyGroup>
 
   <ItemGroup>
@@ -26,7 +27,7 @@
     <RazorCompileOnBuild>false</RazorCompileOnBuild>
     <RazorCompileOnPublish>false</RazorCompileOnPublish>
   </PropertyGroup>
-  
+
   <Import Project="..\PACKAGE_PROJECT_NAME_FROM_TEMPLATE\buildTransitive\PACKAGE_PROJECT_NAME_FROM_TEMPLATE.targets" Condition="'$(PackageProjectName)' != ''" />
   <ItemGroup Condition="'$(PackageProjectName)' != ''">
     <ProjectReference Include="..\PACKAGE_PROJECT_NAME_FROM_TEMPLATE\PACKAGE_PROJECT_NAME_FROM_TEMPLATE.csproj" />