Add a tooltip to scripts in NPM script view (#61596)

Fixes #55218

extensions/npm/src/npmView.ts

@@ -108,6 +108,13 @@ class NpmScript extends TreeItem {
 				dark: context.asAbsolutePath(path.join('resources', 'dark', 'script.svg'))
 			};
 		}
+
+		let uri = getPackageJsonUriFromTask(task);
+		getScripts(uri!).then(scripts => {
+			if (scripts && scripts[task.definition['script']]) {
+				this.tooltip = scripts[task.definition['script']];
+			}
+		});
 	}
 
 	getFolder(): WorkspaceFolder {