Add supportsMemoryEvent (microsoft#165876)

For microsoft#164124

Author: roblourens

src/vs/workbench/contrib/debug/browser/debugSession.ts

@@ -306,7 +306,8 @@ export class DebugSession implements IDebugSession {
 				supportsProgressReporting: true, // #92253
 				supportsInvalidatedEvent: true, // #106745
 				supportsMemoryReferences: true, //#129684
-				supportsArgsCanBeInterpretedByShell: true // #149910
+				supportsArgsCanBeInterpretedByShell: true, // #149910
+				supportsMemoryEvent: true
 			});
 
 			this.initialized = true;