Move projects into folders

.travis.yml

@@ -18,7 +18,7 @@ install:
 script: |
   echo "Checking format..." 
   dotnet format --check --dry-run -w . -v diagnostic # check C# formatting for neo.sln
-  cd neo.UnitTests
+  cd tests/neo.UnitTests
   if [[ "$TEST_SUITE" == "cultures" ]]; then
       dotnet test -v m --filter FullyQualifiedName=Neo.UnitTests.UT_Culture.All_Tests_Cultures
   else

neo.sln

@@ -1,11 +1,14 @@
-
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.26430.15
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29519.87
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "neo", "neo\neo.csproj", "{36447A9B-0311-4D4D-A3D5-AECBE9C15BBC}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "neo", "src\neo\neo.csproj", "{36447A9B-0311-4D4D-A3D5-AECBE9C15BBC}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "neo.UnitTests", "neo.UnitTests\neo.UnitTests.csproj", "{5B783B30-B422-4C2F-AC22-187A8D1993F4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "neo.UnitTests", "tests\neo.UnitTests\neo.UnitTests.csproj", "{5B783B30-B422-4C2F-AC22-187A8D1993F4}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{B5339DF7-5D1D-43BA-B332-74B825E1770E}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{EDE05FA8-8E73-4924-BC63-DD117127EEE1}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -25,4 +28,11 @@ Global
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{36447A9B-0311-4D4D-A3D5-AECBE9C15BBC} = {B5339DF7-5D1D-43BA-B332-74B825E1770E}
+		{5B783B30-B422-4C2F-AC22-187A8D1993F4} = {EDE05FA8-8E73-4924-BC63-DD117127EEE1}
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {BCBA19D9-F868-4C6D-8061-A2B91E06E3EC}
+	EndGlobalSection
 EndGlobal