feat(typescript-estree): default projectService.defaultProject to 'tsconfig.json'#9893

JoshuaKGoldberg merged 6 commits intotypescript-eslint:maintypescript-eslint/typescript-eslint:mainfrom

JoshuaKGoldberg:project-service-default-project-tsconfig.jsonJoshuaKGoldberg/typescript-eslint:project-service-default-project-tsconfig.jsonCopy head branch name to clipboard