Introduce project-specific solution file

Previously, this repository was part of the `Topics-Library` (soon to be `OnTopic-Library`) repository. As it has been split off, however, the previous `sln` file was left behind since it included a long commit history that wasn't specific to `OnTopic.Web`. This fresh version is specific to `OnTopic.Web`, and acknowledges that while this is legacy code, it is a new solution.

Author: JeremyCaney

OnTopic.Web.sln

@@ -0,0 +1,37 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29215.179
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OnTopic.Web", "OnTopic.Web\OnTopic.Web.csproj", "{C98F7B48-A085-4394-B820-C244F23868CE}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{0D5A35CE-F5A4-4DDF-8938-8B1116CDF58E}"
+	ProjectSection(SolutionItems) = preProject
+		.gitignore = .gitignore
+		GitVersion.yml = GitVersion.yml
+		README.md = README.md
+	EndProjectSection
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OnTopic.Web.Host", "OnTopic.Web.Host\OnTopic.Web.Host.csproj", "{5CEBC2AE-7A33-4F8A-B45F-29BEFB56E013}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{C98F7B48-A085-4394-B820-C244F23868CE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C98F7B48-A085-4394-B820-C244F23868CE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C98F7B48-A085-4394-B820-C244F23868CE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C98F7B48-A085-4394-B820-C244F23868CE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5CEBC2AE-7A33-4F8A-B45F-29BEFB56E013}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5CEBC2AE-7A33-4F8A-B45F-29BEFB56E013}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5CEBC2AE-7A33-4F8A-B45F-29BEFB56E013}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5CEBC2AE-7A33-4F8A-B45F-29BEFB56E013}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9E9FBF9F-CE4C-4721-B099-58A561875E1B}
+	EndGlobalSection
+EndGlobal