benchmarking

[xlc]

Setup benchmarking

Something like
https://github.com/paritytech/substrate/blob/master/frame/balances/src/benchmarking.rs

• cdp_engine
• dex
• homa
• honzon

[xlc]

High level description: paritytech/substrate#5446
Examples as be found at paritytech/substrate#5596

[xlc]

Everything except Homa related pallets are done. Will make one for Homa.