Second metadata schema added

METADATA_metadaten_DALIAInterchangeFormat(DIF)

+"Authors": ["Moser, Mario, 0000-0001-9325-4074", "Trautwein-Bruns, Ute, 0000-0003-0531-0182", "Neumann, Janna, 0000-0002-0161-1888", "Wedlich-Zachodin, Kerstin, 0000-0001-7740-7966", "Langenbach, Christian, 0000-0002-8575-1684", "Galdino, Marcos, 0000-0003-2454-5964"], 
+"License": "CC-BY-4.0", 
+"Link": "https://liascript.github.io/course/?https://api.allorigins.win/raw?url=https://git.rwth-aachen.de/nfdi4ing/education/trainingplatform/metadata/-/raw/main/metadaten_DE.md" 
+"Title": "Metadaten", 
+"Community": "NFDI4ING", 
+"Description": "Self-paced Basic RDM Training Material specifically for Engineering Sciences on Metadata", 
+"Discipline": ["8", "61"], 
+"FileFormat": "md", 
+"Keywords": ["metadata"], 
+"Language": ["de"], 
+"LearningResourceType": ["Lehrbuch"], 
+"MediaType": ["text", "image"], 
+"ProficiencyLevel": ["novice", "advanced beginner"], 
+"PublicationDate": "2025-01-01", 
+"TargetGroup": ["student (BA)", "student (MA)", "student (PhD)", "data steward", "teacher (school)", "teacher (higher education)", "researcher"],