Add EZCOV coverage support

[TheZ3ro]

Checklist

Which kind of PR do you create?

• This PR only contains minor fixes.
• This PR contains major feature update.
• This PR introduces a new function/api for Qiling Framework.

Coding convention?

• The new code conforms to Qiling Framework naming convention.
• The imports are arranged properly.
• Essential comments are added.
• The reference of the new code is pointed out.

Extra tests?

• No extra tests are needed for this PR.
• I have added enough tests for this PR.
• Tests will be added after some discussion and review.

Changelog?

• This PR doesn't need to update Changelog.
• Changelog will be updated after some proper review.
• Changelog has been updated in my PR.

Target branch?

• The target branch is dev branch.

One last thing

• I have read the contribution guide

---

This PR add support to the EZCOV coverage format as specified by the Cartographer tool.
This is just a "copy" of the already existing DRCOV coverage format extension already present in Qiling.

[TheZ3ro]

I force-pushed rebasing this PR on your latest commit in dev branch.
Should be good to go now. Let me know if I need to change something else 👍

[elicn]

Thanks for the contribution!

[xwings]

thank you!