- Removed datasheet links from mermaid diagrams to fix rendering issues
- Moved all datasheet references from inline text to dedicated section
- Added comprehensive 'Datenblätter' section with categorized component links:
* Energieversorgung (XB4908A, BQ27441-G1, BQ25672)
* Spannungswandlung (TPS63020, XC6206P332MR-G, TPS2116)
* Diskrete Bauteile (HL3416)
- Updated table of contents to include new datasheet section
- Improved readability by removing link clutter from technical text
- Fixed flowchart diagram functionality in Hardware_PowerSupply.de.md
- Adds CONTRIBUTING.md and a German translation to establish commit message conventions.
- Creates a Hardware/ directory with a .gitignore for KiCad projects.
- Refactors and improves the power supply documentation.