Remove dependency on skaffold

[jlewi]

• Depending on skaffold causes versioning issues.
• Current issue is that skaffold depends on old versions of otel (open telemetry clients) and vendors those in. The open telemetry clients aren't backwards compatible (skaffold is using a version prior to their v1 release)
• skaffold isn't really a library so arguably they aren't breaking us
• Currently skaffold is invoked via exec'ing out to it so arguably there's no reason to pay the pain of pulling it in as a dependency
• The only code we are pulling in from the skaffold package is the structures for skaffold configs and build output we can just copy those files.