Allow change of installer type MSI => WIX

[Trenly]

Description of the new feature / enhancement

There are several packages in the community repository with the installer type currently set to MSI incorrectly. Since the addition of #217 and #220, wingetcreate can now detect when an MSI file is actually built with WIX (thanks @jedieaston!) and will match the WIX installer to the MSI entry. However, this relies on the user to update the installer type themselves, even if wingetcreate can detect it reliably.

As a user, it would be nice if installer types would automatically be updated if the detected installer type is compatible with and more specific than the installer type already defined in the manifest. As an example, InstallerType of MSI could be changed to WIX, but WIX should not be changed to MSI. Similarly, EXE could be changed to INNO, NULLSOFT, or BURN, but not the other way around;

Proposed technical implementation details

No response