Referenda and Conviction Voting pallets (#10195)

* Initial draft of new referendum state machine.

* Docs

* Fixes

* Fixes

* Add conviction-voting pallet

* Basic build

* Building

* Some TODOs

* Tests building

* Add missing file

* Basic lifecycle test

* Add couple of tests

* Another test

* More tests

* Fixes

* Fixes

* Formatting

* Fixes

* Tests

* Fixes

* Fixes

* More tests

* Formatting

* First few benchmarks

* First few benchmarks

* Defered queue servicing

* More testing

* Benchmarks

* Fiddly benchmark

* Final nudge benchmarks

* Formatting

* Formatting

* Finished up benchmarks

* cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_referenda --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/referenda/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Events finished

* Missing file

* No GenesisConfig for Referenda

* Formatting

* Docs

* Docs

* Docs

* Per-class conviction voting

* New test & mock utils

* More tests

* Tests

* Tests finished 🎉

* Benchmarking stuff

* Fixes

* Test harness

* Test harness

* Benchmarks for Conviction=Voting

* Benchmarking pipeline complete

* Docs

* Formatting

* Remove unneeded warning

* Fix UI tests

* cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_conviction_voting --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/conviction-voting/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Docs

* Update frame/conviction-voting/src/vote.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* update sp-runtime version

* MEL Fixes for Referenda and Conviction Voting (#10725)

* free maxencodedlen

* more maxencodedlen

* more MEL

* more mel

* disable storage info

* More Referenda Patches (#10760)

* basic fixes

* fix benchmarking

* fix license

* prevent panic in curve math

* fmt

* bump crate versions

* Update mock.rs

Co-authored-by: Parity Bot <admin@parity.io>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/Cargo.lock

@@ -4871,6 +4871,7 @@ dependencies = [
  "pallet-contracts",
  "pallet-contracts-primitives",
  "pallet-contracts-rpc-runtime-api",
+ "pallet-conviction-voting",
  "pallet-democracy",
  "pallet-election-provider-multi-phase",
  "pallet-elections-phragmen",
@@ -4889,6 +4890,7 @@ dependencies = [
  "pallet-proxy",
  "pallet-randomness-collective-flip",
  "pallet-recovery",
+ "pallet-referenda",
  "pallet-scheduler",
  "pallet-session",
  "pallet-session-benchmarking",
@@ -5672,6 +5674,25 @@ dependencies = [
  "sp-std",
 ]
 
+[[package]]
+name = "pallet-conviction-voting"
+version = "4.0.0-dev"
+dependencies = [
+ "assert_matches",
+ "frame-benchmarking",
+ "frame-support",
+ "frame-system",
+ "pallet-balances",
+ "pallet-scheduler",
+ "parity-scale-codec",
+ "scale-info",
+ "serde",
+ "sp-core",
+ "sp-io",
+ "sp-runtime",
+ "sp-std",
+]
+
 [[package]]
 name = "pallet-democracy"
 version = "4.0.0-dev"
@@ -6122,6 +6143,26 @@ dependencies = [
  "sp-std",
 ]
 
+[[package]]
+name = "pallet-referenda"
+version = "4.0.0-dev"
+dependencies = [
+ "assert_matches",
+ "frame-benchmarking",
+ "frame-support",
+ "frame-system",
+ "pallet-balances",
+ "pallet-preimage",
+ "pallet-scheduler",
+ "parity-scale-codec",
+ "scale-info",
+ "serde",
+ "sp-core",
+ "sp-io",
+ "sp-runtime",
+ "sp-std",
+]
+
 [[package]]
 name = "pallet-scheduler"
 version = "4.0.0-dev"