Fix unknown fontname in TrueType(Arial, TimesNewRoman) (#767)

[sobuen]

Pull request

Fix #767
Support TrueType fonts(Arial, TimesNewRoman, CourierNew).
reference: Section 5.5.1 of the PDF Reference

How Has This Been Tested?

Test pdf file

# Part of confirmation code
resource_manager = PDFResourceManager()
device = PDFPageAggregator(resource_manager, laparams=LAParams(detect_vertical=True))
with open(input_file, 'rb') as fp:
    interpreter = PDFPageInterpreter(resource_manager, device)
    
    for page in PDFPage.get_pages(fp, check_extractable=False):
        interpreter.process_page(page)
        layout = device.get_result()

        for lt in layout:
            ...

with Python 3.8.13.

Confirmed worked with "Arial", "Arial,Bold", "TimesNewRoman", "TimesNewRoman,Italic", "TimesNewRoman,Bold".
While the "Arial,Italic", "Arial,BoldItalic", "TimesNewRoman,BoldItalic", "CourierNew*" not yet confirmed. (no data to confirm)

Checklist

• I have read CONTRIBUTING.md.
• I have added a concise human-readable description of the change to CHANGELOG.md.
• I have tested that this fix is effective or that this feature works.
• I have added docstrings to newly created methods and classes.
• I have updated the README.md and the readthedocs documentation. Or verified that this is not necessary.