Add ZIP-archive support

What does this MR do?

Adds loading and checking of CityGML ZIP-archives in CityDoctor.

Fixes report creation with Features added in version 3.16.0

Related issues

• #12 (closed)
• #104 (closed)

Checklist

• Commits squashed, following the message-template and containing changelog-trailers
• MR title and description are up to date, accurate, and descriptive.
• MR targeting the appropriate branch.
• Latest Merge Result pipeline is green.

CHANGELOG.md

@@ -5,7 +5,24 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [3.16.0] ((2024-11-11))
+## [3.17.0] (TBD)
+
+### Added
+
+- Checking of CityGml ZIP-archives with CityDoctor (#12)
+
+### Changed
+
+- Changed GUI to allow loading and checking of ZIP-archives. (#12)
+
+### Fixes
+
+- Reworked self-intersection calculations to eliminate false-positives (#65)
+- CityGml objects added in 3.16.0 are now being recorded in error statistics and validation reports (#104)
+- Envelope and CRS will now be included when exporting singular features
+- Fixed various minor errors and bugs in CityDoctorGUI
+
+## [3.16.0] (2024-11-11)
 
 CityDoctor now supports the import, export and validation of CityGML 3.0 files.