Extend supported formats

[hexapode]

Add a few other file formats:

• Microsoft word derivative and older version (.dot, .dotm,....)
• Microsoft powerpoint derivative and older version (.ppt!, ....)
• Libre/open office derivative and older versions

New full supported language list:

SUPPORTED_FILE_TYPES = [
    ".pdf",
    # Microsoft word - all versions
    ".doc",
    ".docx",
    ".docm",
    ".dot",
    ".dotx",
    ".dotm",
    # Rich text format
    ".rtf",
    # Microsoft Works
    ".wps",
    # Word Perfect
    ".wpd",

    # Open Office
    ".sxw",
    ".stw", 
    ".sxg",

    # Apple
    ".pages",

    # Mac Write
    ".mw",
    ".mcw",


    # Unified Office Format text
    ".uot",
    ".uof",
    ".uos",
    ".uop",

    # Microsoft powerpoints
    ".ppt",
    ".pptx",
    ".pot",
    ".pptm",
    ".potx",
    ".potm",


    # Apple keynote
    ".key",

    # Open Office Presentations
    ".odp",
    ".odg",
    ".otp",
    ".fopd",
    ".sxi", 
    ".sti",
    
    # ebook
    ".epub"
]