10.0.0-preview.35

feat: angular hub api service should be notify on connection errors
fix: typescript enum with negative values has to be wrapped in string to solve TS2322
fix: invalid msbuild target name
fix: output generator assemblies to generators directory instead of ref directory
refactor: moved AssemblyLoader from KY.Core to Common
feat: improved assembly loading to check potential directories smarter
refactor: move some assembly load and check logic to load command
refactor: combined some generator specific assembly load logic with logic from KY.Core
feat: removed AssemblyCache because load performance is now similar to cache loading
feat: added GeneratePluginAttribute to signal deep assembly load behavior
feat: extended GenerateWithAttribute to support better assembly finding by version
refactor: replaced nuspec with definitions in csproj