Add launchSettings.json to worker template (#7550)

* Add launchSettings.json to worker template #7545
* Switch back to the Web SDK

src/ProjectTemplates/.gitignore

@@ -0,0 +1,2 @@
+#launchSettings.json files are required for the templates.
+!launchSettings.json

src/ProjectTemplates/Web.ProjectTemplates/Worker-CSharp.csproj.in

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.0</TargetFramework>

src/ProjectTemplates/Web.ProjectTemplates/content/Worker-CSharp/Properties/launchSettings.json

@@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "Company.Application1": {
+      "commandName": "Project",
+      "environmentVariables": {
+        "DOTNET_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}