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/Cargo.lock

@@ -4764,6 +4764,7 @@ dependencies = [
  "pallet-preimage",
  "pallet-proxy",
  "pallet-randomness-collective-flip",
+ "pallet-ranked-collective",
  "pallet-recovery",
  "pallet-referenda",
  "pallet-remark",
@@ -5988,6 +5989,23 @@ dependencies = [
  "sp-std",
 ]
 
+[[package]]
+name = "pallet-ranked-collective"
+version = "4.0.0-dev"
+dependencies = [
+ "frame-benchmarking",
+ "frame-support",
+ "frame-system",
+ "log",
+ "parity-scale-codec",
+ "scale-info",
+ "sp-arithmetic",
+ "sp-core",
+ "sp-io",
+ "sp-runtime",
+ "sp-std",
+]
+
 [[package]]
 name = "pallet-recovery"
 version = "4.0.0-dev"