Extract Editorial Package: Use native OTIO export on Resolve >18.5

[BigRoy]

Changelog Description

Use native OTIO export on Resolve >18.5
Fix version comparison.

Additional review information

The native OTIO export should now be used instead of the custom one.

Fix: #77

Testing notes:

1. On Resolve higher than 18.5 it should use the native export functionality (18.5 should still use the old)