Crust PoC-8.1

Overview

So far, Maxwell M2 already completed 80%. Closed 11 feature requests and still have 8 opens.

Features

• ⬆️ [Upgrade] Upgrade sb-rc6 #251
• 🚑 [GPoS] Support active era #252
• 🚑 [Runtime] Add utility and identity #256
• 🎨 [Runtime] Refine pallets name #257

Fixes

• 📈 [Benchmark] Fix it and add one more test #255