Update Pallet Referenda to support Block Number Provider#6338

muharem merged 20 commits intoparitytech:masterparitytech/polkadot-sdk:masterfrom

dharjeezy:dami/pallet_referenda_block_number_providerdharjeezy/polkadot-sdk:dami/pallet_referenda_block_number_providerCopy head branch name to clipboard