docs: Add LICENSE, CONTRIBUTING.md, CHANGELOG.md, and .gitignore

- Add MIT License for open source clarity
- Add .gitignore to prevent unwanted files in commits
- Add CONTRIBUTING.md guidelines for contributors
- Add CHANGELOG.md template for version tracking

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

CHANGELOG.md

@@ -0,0 +1,34 @@
+# Changelog
+
+Alle bemerkenswerten Änderungen an diesem Projekt werden in dieser Datei dokumentiert.
+
+Das Format basiert auf [Keep a Changelog](https://keepachangelog.com/de/1.0.0/),
+und dieses Projekt folgt [Semantic Versioning](https://semver.org/lang/de/).
+
+## [Unreleased]
+
+### Added
+- 
+
+### Changed
+- 
+
+### Deprecated
+- 
+
+### Removed
+- 
+
+### Fixed
+- 
+
+### Security
+- 
+
+## [1.0.0] - 2026-04-12
+
+### Added
+- Initiale Version
+
+[Unreleased]: https://github.com/Konnos/Fingerprint-Sensor/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/Konnos/Fingerprint-Sensor/releases/tag/v1.0.0