refactor: setup build configuration

[ValMystletainn]

simplify the package confiugration file mentioned in PR #431 and issue #429
as mentioned in this issue. I have refactored the files, save only pyproject.toml and requirements.txt. Besides, I added the dynamic version in pyproject.toml, note by the building tool setuptools-git-versioning

since I have no permission to tag the master branch or make a release. You may tag the version for those important commits by yourself and then build it and release it. The setup git versioning just give 0.0.1 right now since there is no tag on the repo now.

By the way, since you don't merge the PR #431 in github, but I noticed that the 1.4.8 are now on in pypi. so I don't you whether I should continue working on my last commit or checkout from master to a new branch. I finally chose the latter one. So I think I should mention that, the MANIFEST.in is no longer in need if this PR is accepted

reference:
setuptools-git-versioning: https://setuptools-git-versioning.readthedocs.io
setuptools-git-versioning by git tag: https://setuptools-git-versioning.readthedocs.io/en/stable/schemas/tag/tag_release.html

[jacobgil]

Thanks a lot for this, it's a great contribution.
Before merging I want to test it a bit too, and might come back with questions/comments. For example, I want to see what this does with the notebooks folder.
Thank you!

[ValMystletainn]

Thanks a lot for this, it's a great contribution. Before merging I want to test it a bit too, and might come back with questions/comments. For example, I want to see what this does with the notebooks folder. Thank you!

ok, it's my pleasure