Ranked Collective pallet (#11548)

* Ranked Collective pallet

* Fixes

* benchmarks

* Weights

* Allow class voting in rank
Use bare ayes for calculating support.
Allow only promotion/demotion by one rank only.
Allow removal of member with rank zero only.
Use new Tally API

* Index by rank, still O(1).

* Custom vote weights

* Formatting

* Update frame/ranked-collective/src/lib.rs

* Broken :(

* origin guard; cleanup uses new API

* Formatting

* Promote/demote by rank

* Formatting

* Use new API

* Remove code in another PR

* Remove code in another PR

* Formatting

* Remove code in another PR

* Docs

* Docs

* Bump

* Fixes

* Formatting

* Fixes

substrate/frame/support/procedural/src/construct_runtime/expand/origin.rs

@@ -186,9 +186,16 @@ pub fn expand_outer_origin(
 				#system_path::RawOrigin::Root.into()
 			}
 
-			fn signed(by: <#runtime as #system_path::Config>::AccountId) -> Self {
+			fn signed(by: Self::AccountId) -> Self {
 				#system_path::RawOrigin::Signed(by).into()
 			}
+
+			fn as_signed(self) -> Option<Self::AccountId> {
+				match self.caller {
+					OriginCaller::system(#system_path::RawOrigin::Signed(by)) => Some(by),
+					_ => None,
+				}
+			}
 		}
 
 		#[derive(