getCLILockFile function
获取项目cli的lock文件
Implementation
File getCLILockFile() {
File lockFile = File(join(PUB_CACHE, 'global_packages/tenon_cli/pubspec.lock'));
if (!lockFile.existsSync()) {
throw Exception('Yuo can use command "<dart> pub global activate tenon_cli" to get this cli.');
}
return lockFile;
}