erp5_core: add OnlyOffice formats + docx to mimetypes registry

added:
  id: Word 2007 document
    icon: docx.png
    binary: yes
    mimetypes: application/vnd.openxmlformats-officedocument.wordprocessingml.document
    extensions: docx
    globs: *.docx
  id: OnlyOffice Text Document
    icon: application.png
    binary: yes
    mimetypes: application/x-asc-text
    extensions: docy
    globs: *.docy
  id: OnlyOffice Spreadsheet
    icon: application.png
    binary: yes
    mimetypes: application/x-asc-spreadsheet
    extensions: xlsy
    globs: *.xlsy
  id: OnlyOffice Presentation
    icon: application.png
    binary: yes
    mimetypes: application/x-asc-presentation
    extensions: ppty
    globs: *.ppty