Picasso Testnet

[seunlanlege]

This is a meta issue, essentially a check list for our picasso test net.

• Picasso Runtime #13
• ParaId for westend 2087
• Create the hardcoded chainspec #14
• Included Pallets
  • Democracy #15
• Set up machines that run the testnet. #19
• Set up CI tasks that automatically push new merged code to the testnet. #20