Package management

[olanod]

WASM binaries might be self contained for now and a command like execute A45d9a21c3a7 is kinda enough to run and pull from the distributed file system if not found locally, but later on with something like the interface types proposal there will be complex graphs of dependencies among WASM apps which needs a tool to orchestrate the whole dependency mess.
A simple start could be to integrate with wapm and its intention to use IPFS but more interesting I think it would be a decentralized on-parachain registry. I started learning substrate and I imagine libp2p and its networking machinery would be something you would be including as core piece of the OS?(perhaps as a standardized WASI module?)