Add LongPathAware Manifest

[dbeinder]

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Starting from Windows 10, paths can be longer than 260 chars, but apps must declare that they are able to handle it, otherwise _tfopen will fail for those files: https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=registry#application-manifest-updates-to-declare-long-path-capability

I have done a quick test, and it seems to work fine, but I'm not familiar enough with the codebase to confidently add a PR for it. https://github.com/dbeinder/jpegview/commit/b35e15c89f333b9b83c209d3988455d4a9b4abb9#diff-163478135344e1ca85e5f1f587940bdeea4beb3a149510970c22ae1c416d7330

[sylikc]

Hmm, this might add a feature... I didn't realize the apps have to declare it.

When you say you've done a quick test... did you name your exe test.exe and include the test.exe.manifest along side it?

[dbeinder]

I tested it by embedding the manifest into the exe during build: You may need to enable long paths on your machine if it has been disabled: https://stackoverflow.com/a/71603209/4371382