[cli] dapp stream

[florianlenz]

Feture request

We need the ability to transport our code to the DApp engine were it will be executed.

We must be able to use the pangea cli to execute a command (dapp:stream) that will pick up the local configuration file for building /& bundling the project. When bundling happened the DApp must be signed with the signing key that got passed into the dapp:stream command. When signing happened the dapp will be send to the device over a libp2p connection that will be initialized by the device.

Acceptenace criteria

• command dapp:stream takes a singing key as it's param, ask for the password to decrypt it and use the local build file to build the project (@hunght)
• sign the bundled code and send it to the device (@florianlenz)