[Feature] 项目目录外执行异常，需优化

[clgwlg]

Context

• 项目名：my_first_project
• 执行目录：/Users/test
• 执行命令：flybirds run --path my_first_project/features/test/android/base_en_click.feature

错误日志

2022-01-11 10:46:26,985 - flybirds_log - INFO - find extend pkg
Exception AttributeError: 'DeviceConfig' object has no attribute 'platform'
Traceback (most recent call last):
File "/usr/local/bin/behave", line 11, in
load_entry_point('behave==1.2.6', 'console_scripts', 'behave')()
File "/usr/local/lib/python3.7/site-packages/behave/main.py", line 183, in main
return run_behave(config)

优化点

• 增加执行前环境检查
• 有更明确的异常信息和错误提示
• 支持某些场景下项目目录的自动检测

[xiaoxiaocaiiao]

已经添加异常检测