chore: set CLI as first project in solution

Because Visual Studio stores the startup project in the user settings for a solution, when one is not set up yet -- such as after cloning the repo locally and running it for the first time -- it will default to the first project listed in the .sln file.
Since the CLI project is the end goal, switching up the order in the file to fit this behavior.

SlavaVedernikov#100

C4InterFlow.sln

@@ -3,11 +3,13 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.4.33110.190
 MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "C4InterFlow.Cli", "C4InterFlow.Cli\C4InterFlow.Cli.csproj", "{EB78BBEC-4D8A-456C-90F1-920E45FFF982}"
+EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "C4InterFlow", "C4InterFlow\C4InterFlow.csproj", "{B047B5AE-FA9A-453E-B522-F53ED61A0C80}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "C4InterFlow.Automation", "C4InterFlow.Automation\C4InterFlow.Automation.csproj", "{5DD6985D-35AC-4154-B09B-2186AB9AA3AD}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "C4InterFlow.Cli", "C4InterFlow.Cli\C4InterFlow.Cli.csproj", "{EB78BBEC-4D8A-456C-90F1-920E45FFF982}"
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{B5B62581-615E-45C5-8A4A-3FEC83B827F6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

Samples/dotnet.eShop/DotNetEShop.sln

@@ -3,10 +3,10 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.8.34309.116
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotNetEShop", "DotNetEShop\DotNetEShop.csproj", "{F18C0E05-2B41-4508-B91D-3B84E0535E99}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotNetEShop.Cli", "DotNetEShop.Cli\DotNetEShop.Cli.csproj", "{0DEABC5C-3A2C-42FE-91B6-E326BA6CF65D}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotNetEShop", "DotNetEShop\DotNetEShop.csproj", "{F18C0E05-2B41-4508-B91D-3B84E0535E99}"
+EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "C4InterFlow", "..\..\C4InterFlow\C4InterFlow.csproj", "{C7E5280A-0FD1-4916-BB13-7F57A5E5274B}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "C4InterFlow.Automation", "..\..\C4InterFlow.Automation\C4InterFlow.Automation.csproj", "{E47ACFF1-7BAC-4538-9558-D7AA04939546}"