Add BambuLab plugin documentation and integration details
- Updated contents in German and English to include a new section for the BambuLab plugin.
- Modified printer management documentation to reflect BambuLab printer specifics.
- Enhanced admin area with device actions and auto-assign configuration for BambuLab integration.
- Added detailed configuration and parameter management for BambuLab printers.
- Included migration notes for users updating from older versions of the BambuLab plugin.