fix: replace err-code with CodeError

[tabcat]

Related: libp2p/js-libp2p#1269

• deps: install @libp2p/interfaces
• fix: replace err-code with CodeError
• deps: remove err-code

[tabcat]

Tests are timing out for me on with and without changes.

[p-shahi]

test timeout might be occurring because it depends on your local setup with UPnP (they're not running on CI)
@achingbrain would rather have a separate dep that's not libp2p interfaces. We closed the main js-libp2p issue (propagating CodeError across the stack) so this will be treated as low priority