test: rename integration_tests to smoke

[yiyoulin678]

Fixes #104

Renamed integration_tests to smoke across the project, including:

• CI workflows
• Makefile targets
• imports and references

[yiyoulin678]

@Khabib73 This is the new PR. Please check this one, thanks!

[Khabib73]

@yiyoulin678 Directory integration_tests has not been renamed

[yiyoulin678]

@yiyoulin678 Directory integration_tests has not been renamed

Sorry, I missed it. I just renamed the directory, please check.

[Khabib73]

@yiyoulin678 Thank you so much for your excellent contribution! Your PR helps the project a lot, and I am happy to accept it. 😊 If you enjoyed working on YATL, I would appreciate it if you supported us with a star on GitHub! ⭐

[yiyoulin678]

@yiyoulin678 Thank you so much for your excellent contribution! Your PR helped the project a lot. 😊 If you enjoyed the experience of working on YATL, I will be very happy if you support us with an star on GitHub! ⭐ this PR will be accepted

@Khabib73 I'm so glad to hear this! This is my first issue solved in Github. I thank you too, because you patiently remind me again and again until I achieve the final goal for me. It's sure that I'll support you with a star.