message: Add activation events for *.csproj and *.sln
diff: "onCommand:csharp.downloadDebugger",
  "onCommand:csharp.listProcess",
  "onCommand:csharp.listRemoteProcess",
  - "workspaceContains:project.json"
  + "workspaceContains:project.json",
  + "workspaceContains:*.csproj",
  + "workspaceContains:*.sln"
  ],
  "contributes": {
  "configuration": {
  