Add proposed API for trusted domains and for web page extraction (#243811)

* Add proposed API for trusted domains and for web page extraction

I don't love the shape of this API but I'm going with this for now to play with it.

This will help Chat provide contents of web pages as context but also allow it full control of the tool.

ref https://github.com/microsoft/vscode/issues/243615

* use a different url

* delete the test until we have a good way to mock

src/vs/workbench/api/common/extHost.api.impl.ts

@@ -416,6 +416,14 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 					throw err;
 				}
 			},
+			isTrustedExternalUris(uris: URI[]): boolean[] {
+				checkProposedApiEnabled(extension, 'envExtractUri');
+				return extHostUrls.isTrustedExternalUris(uris);
+			},
+			extractExternalUris(uris: URI[]): Promise<string[]> {
+				checkProposedApiEnabled(extension, 'envExtractUri');
+				return extHostUrls.extractExternalUris(uris);
+			},
 			get remoteName() {
 				return getRemoteName(initData.remote.authority);
 			},