Remove the tests directory from the build files.

[ikedaosushi]

Background

The top-level tests directory is included in the build files. When I install the library, there's tests directory in the site-packages as well as adagio, and adagio_version. It may prevent the users from importing their tests directory.

Changes

I added the exclude option to find_packages to exclude the test directory

[ikedaosushi]

Hi, @goodwanghan. Could you check this PR when you have time? The library is a dependency of PyCaret, so many users would face the issue.

[goodwanghan]

@ikedaosushi I am sorry I was not aware of this PR. Will publish 0.2.5 to fix this issue

[ikedaosushi]

@goodwanghan thank you!