Separated core projects from sample projects in solution level (#1428)

* Seperated core projects from sample projects in solution level

UA Reference.sln

@@ -41,6 +41,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Opc.Ua.Bindings.Https", "St
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Opc.Ua.Security.Certificates", "Libraries\Opc.Ua.Security.Certificates\Opc.Ua.Security.Certificates.csproj", "{4B72937F-5A57-4CEA-B9FE-B4C45CF7B284}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Libraries", "Libraries", "{ACBF012E-08A7-4939-88CF-D6B610E35AC5}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Applications", "Applications", "{07AA31A3-97A1-4A6F-9E88-97B5198997B7}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -212,6 +216,21 @@ Global
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{6C449A1E-244E-4515-9949-A7E22012537C} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+		{D918C0F6-39BD-4ED0-8323-E5A2EB9A85DA} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+		{15100583-BFEF-431B-A1EA-1E5A843A39B1} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+		{A39614CA-8EBE-4408-A9D2-38C7E5AE2A1D} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+		{FE9EEB39-0698-4A19-B770-E66836CE0002} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+		{66A80316-EF8A-4D9E-9AAD-C54E372457CE} = {07AA31A3-97A1-4A6F-9E88-97B5198997B7}
+		{A247D2EE-14FC-463D-A9BA-6CFF1EF22B7A} = {07AA31A3-97A1-4A6F-9E88-97B5198997B7}
+		{80056988-44E7-4EF4-9F59-50BCF215CB03} = {07AA31A3-97A1-4A6F-9E88-97B5198997B7}
+		{9C1E7F15-2EE3-440D-8E17-00C38073822A} = {07AA31A3-97A1-4A6F-9E88-97B5198997B7}
+		{42EF4F25-29BF-4AB7-B403-8523694A3B36} = {07AA31A3-97A1-4A6F-9E88-97B5198997B7}
+		{8121879E-D2FD-4B6A-97D9-0F6CBC294411} = {07AA31A3-97A1-4A6F-9E88-97B5198997B7}
+		{92D98D3D-2A7D-4F4B-8C72-1A98908D0221} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+		{4B72937F-5A57-4CEA-B9FE-B4C45CF7B284} = {ACBF012E-08A7-4939-88CF-D6B610E35AC5}
+	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {33FA5BCB-C827-4D44-AECF-F51342DFE64A}
 	EndGlobalSection