MNT: Specify encodings when opening file

src/caosadvancedtools/collect_datamodel.py

src/caosadvancedtools/crawler.py

src/caosadvancedtools/export_related.py

src/caosadvancedtools/import_from_xml.py

src/caosadvancedtools/loadFiles.py

src/caosadvancedtools/models/parser.py

src/caosadvancedtools/pandoc_header_tools.py

src/caosadvancedtools/table_export.py