wip: refactored asset-io with loader functions for urls and buffers
wip: refactored asset-io with loader functions for urls and buffers

zenmumbler/stardazed-tx,zenmumbler/libzm,stardazed/stardazed,stardazed/stardazed-tx,zenmumbler/libzm,zenmumbler/libzm,zenmumbler/stardazed-tx,stardazed/stardazed-tx,zenmumbler/stardazed-tx,zenmumbler/libzm,stardazed/stardazed-tx,zenmumbler/stardazed-tx,stardazed/stardazed