Add a few Microsoft-specific MIME types, and synchronize between `mimetypes` module and tests

[clin1234]

Feature or enhancement

Proposal:

MIME types to be present in Lib/mimetypes.py and Lib/tests/mimetypes.py:

• ("application/vnd.microsoft.portable-executable", ".exe" or ".dll"),
• ("application/vnd.ms-cab-compressed", ".cab"),
• ("application/vnd.ms-htmlhelp", ".chm"),
• ("application/vnd.ms-officetheme", ".thmx"),
• ("image/vnd.microsoft.icon", ".ico"),

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs

• gh-145717: Add a few Microsoft-specific MIME types, and synchronize between mimetypes module and tests #145718