Merge pull request #75741 from microsoft/dev/mjbvz/webviewResourceRoot

Add vscode.env.webviewResourceRoot API

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

@@ -58,6 +58,7 @@ export interface IEnvironment {
 	extensionTestsLocationURI?: URI;
 	globalStorageHome: URI;
 	userHome: URI;
+	webviewResourceRoot: string;
 }
 
 export interface IStaticWorkspaceData {

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

@@ -259,7 +259,11 @@ export function createApiFactory(
 			},
 			openExternal(uri: URI) {
 				return extHostWindow.openUri(uri, { allowTunneling: !!initData.remoteAuthority });
-			}
+			},
+			get webviewResourceRoot() {
+				checkProposedApiEnabled(extension);
+				return initData.environment.webviewResourceRoot;
+			},
 		};
 		if (!initData.environment.extensionTestsLocationURI) {
 			// allow to patch env-function when running tests