Use CIDv1 by default

[davidd8]

IPFS desktop currently defaults to using CIDv0 when importing files and adding them to IPFS. This PR changes the default to use CIDv1.

This should solve #2361 and make sure IPFS Desktop is using the most up-to-date CID standard.

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[SgtPooki]

Thanks for this @davidd8 ! I just approved the CI tests to run and will review once passing.