Update project GUIDs and add new build configuration

Updated the project type GUIDs in `ClassicalCompendium.sln` for both `ClassicalCompendium` and `ClassicalCompendium.Tests` projects, indicating a migration to a newer project format. Added `Debug|Any CPU.Build.0` configuration for `ClassicalCompendium.Tests` to ensure it builds in Debug mode.

ClassicalCompendium.sln

@@ -3,9 +3,9 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.10.35201.131
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ClassicalCompendium", "ClassicalCompendium\ClassicalCompendium.csproj", "{645133BB-A893-4E8B-8963-F889582A4CE6}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ClassicalCompendium", "ClassicalCompendium\ClassicalCompendium.csproj", "{645133BB-A893-4E8B-8963-F889582A4CE6}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ClassicalCompendium.Tests", "ClassicalCompendium.Tests\ClassicalCompendium.Tests.csproj", "{A86ECB33-806C-4C08-ACEA-BD2709BD2851}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ClassicalCompendium.Tests", "ClassicalCompendium.Tests\ClassicalCompendium.Tests.csproj", "{A86ECB33-806C-4C08-ACEA-BD2709BD2851}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -18,6 +18,7 @@ Global
 		{645133BB-A893-4E8B-8963-F889582A4CE6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{645133BB-A893-4E8B-8963-F889582A4CE6}.Release|Any CPU.Build.0 = Release|Any CPU
 		{A86ECB33-806C-4C08-ACEA-BD2709BD2851}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A86ECB33-806C-4C08-ACEA-BD2709BD2851}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A86ECB33-806C-4C08-ACEA-BD2709BD2851}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A86ECB33-806C-4C08-ACEA-BD2709BD2851}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection