enhance: Add comprehensive .gitignore for deb-mock project

- Add mock-specific build artifacts (chroot/, mock-*, mockroot/)
- Include package build files (*.deb, *.changes, *.buildinfo)
- Add development tools (.coverage, .pytest_cache, .tox)
- Include system files (.DS_Store, Thumbs.db, ._*)
- Add temporary and backup files (*.tmp, *.bak, *.backup)
- Include local configuration overrides (config.local.yaml, .env.local)
- Add test artifacts and documentation builds
- Comprehensive coverage for Python build system project

This ensures build artifacts, chroot environments, and development
tools are properly ignored in version control.

docs/Release-Notes-5.8.md

@@ -0,0 +1,23 @@
+---
+layout: default
+title: Release Notes - Mock 5.8
+---
+
+## [Release 5.8](https://rpm-software-management.github.io/mock/Release-Notes-5.8) - 2024-09-27
+
+
+### Bugfixes
+
+- Mock v5.7 introduced a regression in the `chroot_scan` plugin that prevented the
+  result directory from being created properly. This issue has been
+  [fixed][PR#1472] - and is the major reason for doing v5.8 bugfix release.
+
+- The ownership of the tarball provided by `chroot_scan` (when `write_tar =
+  True`) has been corrected, ensuring the file is no longer root-owned.
+
+- The `chroot_scan` plugin now consistently uses the `util.do` method instead of
+  custom `subprocess.call` calls.  This ensures that the `mock --verbose` output
+  properly displays the commands (like `cp`, or `tar`) being executed.
+
+
+[PR#1472]: https://github.com/rpm-software-management/mock/pull/1472