Initial support for validating extension engines.lens version (#2884)

src/extensions/__tests__/extension-discovery.test.ts

@@ -93,6 +93,7 @@ describe("ExtensionDiscovery", () => {
           id: path.normalize("node_modules/my-extension/package.json"),
           isBundled: false,
           isEnabled: false,
+          isCompatible: false,
           manifest:  {
             name: "my-extension",
           },

src/extensions/__tests__/lens-extension.test.ts

@@ -38,7 +38,8 @@ describe("lens extension", () => {
       absolutePath: "/absolute/fake/",
       manifestPath: "/this/is/fake/package.json",
       isBundled: false,
-      isEnabled: true
+      isEnabled: true,
+      isCompatible: true
     });
   });