feat(log): remove core dependency and update core interface to be dependency free (backport #21045) (#21089)

Co-authored-by: Aaron Craelius <aaronc@users.noreply.github.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

testutil/mock/logger.go

@@ -7,7 +7,7 @@ package mock
 import (
 	reflect "reflect"
 
-	log "cosmossdk.io/core/log"
+	log "cosmossdk.io/log"
 	gomock "github.com/golang/mock/gomock"
 )