Support debug apps running under mono runtime using vsdbg.

package.json

@@ -1021,6 +1021,7 @@
     "onDebugResolve:blazorwasm",
     "onDebugResolve:coreclr",
     "onDebugResolve:clr",
+    "onDebugResolve:monovsdbg",
     "onDebugResolve:dotnet",
     "onLanguage:csharp",
     "onCommand:o.showOutput",
@@ -1642,7 +1643,8 @@
                 "type": "string",
                 "enum": [
                   "coreclr",
-                  "clr"
+                  "clr",
+                  "monovsdbg"
                 ],
                 "description": "Type type of code to debug. Can be either 'coreclr' for .NET Core debugging, or 'clr' for Desktop .NET Framework. 'clr' only works on Windows as the Desktop framework is Windows-only.",
                 "default": "coreclr"
@@ -4875,6 +4877,14 @@
             }
           }
         ]
+      },
+      {
+        "type": "monovsdbg",
+        "label": ".NET Core using Mono Runtime",
+        "hiddenWhen": "true",
+        "languages": [
+          "csharp"
+        ]
       }
     ],
     "semanticTokenTypes": [

src/coreclrDebug/activate.ts

@@ -92,8 +92,15 @@ export async function activate(
             new BaseVsDbgConfigurationProvider(platformInformation, csharpOutputChannel)
         )
     );
+    context.subscriptions.push(
+        vscode.debug.registerDebugConfigurationProvider(
+            'monovsdbg',
+            new BaseVsDbgConfigurationProvider(platformInformation, csharpOutputChannel)
+        )
+    );
     disposables.add(vscode.debug.registerDebugAdapterDescriptorFactory('coreclr', factory));
     disposables.add(vscode.debug.registerDebugAdapterDescriptorFactory('clr', factory));
+    disposables.add(vscode.debug.registerDebugAdapterDescriptorFactory('monovsdbg', factory));
 
     context.subscriptions.push(disposables);
 }