fix: use fixed width integer types to define jule types

[vil02]

Description

Since the true size of basic integer types might be everything depended, I suggest to define jule integer types using the fixed with integer types.

Checklist

• A description of the changes in this PR is mentioned above.
• All the new and existing tests pass.
• The code follows the code style and conventions of the project.
• No plagiarized, duplicated, or repetitive code that has been directly copied from another source.
• I have read the whole Contributing guidelines of the project and its resources/related pages.

Screenshots (if any)

Note to reviewers

Use fixed width integer types to define jule types.

[mertcandav]

LGTM. Thanks for your contribution.

[vil02]

@mertcandav do you know what have happened in this job?

[mertcandav]

Not yet. I will review this problem as far as soon. I will revert this PR and open an issue for that.
If you have idea about that, please share with us via relevant issue.

Thanks.

[vil02]

(since the issue is not yet there)

Did you try to simply rerun the failed jobs? When I synchronized my fork, both build and tests were successful.

[mertcandav]

No, I'll investigate. There are might be more deep problems.
But issue also discuss some things. Then, I think we can merge this PR.