Merkle Mountain Range pallet (#7312)

* Add MMR pallet.

* WiP

* Working on testing.

* WiP - test

* Tests passing.

* Add proof generation.

* Generate and verify proofs.

* Allow verification of older proofs.

* Move stuff to a module.

* Split MMR stuff to it's own module.

* Add docs.

* Make parent hash optional.

* LeafData failed approach.

* Finally implement Compact stuff.

* Compact encoding WiP

* Implement remaining pieces.

* Fix tests

* Add docs to compact.

* Implement for tuples.

* Fix documentation.

* Fix warnings and address review suggestion.

* Update frame/merkle-mountain-range/src/primitives.rs

Co-authored-by: cheme <emericchevalier.pro@gmail.com>

* Address review grumbles.

* Removing missing crate.

* Fix test.

* Add some docs and test.

* Add multiple instances.

* Cargo.toml sync.

* Fix no_std compilation.

* More no_std stuff.

* Rename MMR struct.

* Addressing other grumbles.

* Fix test.

* Remove format for no_std compat.

* Add test for MMR pallet.

* Fix std feature.

* Update versions.

* Add to node/runtime.

* Add hook to insert digest.

* Make primitives public.

* Update lib.rs

tech spec/typos etc

* Use WeightInfo and benchmarks.

* Fix test.

* Fix benchmarks.

* Trait -> Config.

* Fix typo.

* Fix tests.

Co-authored-by: cheme <emericchevalier.pro@gmail.com>
Co-authored-by: Addie Wagenknecht <addie@nortd.com>

substrate/Cargo.toml

@@ -1,19 +1,19 @@
 [workspace]
 members = [
 	"bin/node-template/node",
-	"bin/node-template/runtime",
 	"bin/node-template/pallets/template",
+	"bin/node-template/runtime",
 	"bin/node/bench",
 	"bin/node/browser-testing",
 	"bin/node/cli",
 	"bin/node/executor",
 	"bin/node/primitives",
-	"bin/node/rpc-client",
 	"bin/node/rpc",
+	"bin/node/rpc-client",
 	"bin/node/runtime",
 	"bin/node/testing",
-	"bin/utils/subkey",
 	"bin/utils/chain-spec-builder",
+	"bin/utils/subkey",
 	"client/api",
 	"client/authority-discovery",
 	"client/basic-authorship",
@@ -26,42 +26,41 @@ members = [
 	"client/consensus/babe",
 	"client/consensus/babe/rpc",
 	"client/consensus/common",
+	"client/consensus/epochs",
 	"client/consensus/manual-seal",
 	"client/consensus/pow",
-	"client/consensus/uncles",
 	"client/consensus/slots",
-	"client/consensus/epochs",
+	"client/consensus/uncles",
 	"client/db",
 	"client/executor",
 	"client/executor/common",
+	"client/executor/runtime-test",
 	"client/executor/wasmi",
 	"client/executor/wasmtime",
-	"client/executor/runtime-test",
 	"client/finality-grandpa",
 	"client/informant",
-	"client/light",
-	"client/tracing",
 	"client/keystore",
+	"client/light",
 	"client/network",
-	"client/network/test",
 	"client/network-gossip",
+	"client/network/test",
 	"client/offchain",
 	"client/peerset",
 	"client/proposer-metrics",
-	"client/rpc-servers",
 	"client/rpc",
 	"client/rpc-api",
+	"client/rpc-servers",
 	"client/service",
 	"client/service/test",
 	"client/state-db",
 	"client/sync-state-rpc",
 	"client/telemetry",
+	"client/tracing",
 	"client/transaction-pool",
 	"client/transaction-pool/graph",
-	"utils/prometheus",
 	"frame/assets",
-	"frame/aura",
 	"frame/atomic-swap",
+	"frame/aura",
 	"frame/authority-discovery",
 	"frame/authorship",
 	"frame/babe",
@@ -72,7 +71,6 @@ members = [
 	"frame/contracts/rpc",
 	"frame/contracts/rpc/runtime-api",
 	"frame/democracy",
-	"frame/elections-phragmen",
 	"frame/elections",
 	"frame/example",
 	"frame/example-offchain-worker",
@@ -83,6 +81,7 @@ members = [
 	"frame/im-online",
 	"frame/indices",
 	"frame/membership",
+	"frame/merkle-mountain-range",
 	"frame/metadata",
 	"frame/multisig",
 	"frame/nicks",
@@ -97,8 +96,8 @@ members = [
 	"frame/session/benchmarking",
 	"frame/society",
 	"frame/staking",
-	"frame/staking/reward-curve",
 	"frame/staking/fuzzer",
+	"frame/staking/reward-curve",
 	"frame/sudo",
 	"frame/support",
 	"frame/support/procedural",
@@ -116,59 +115,59 @@ members = [
 	"frame/utility",
 	"frame/vesting",
 	"primitives/allocator",
+	"primitives/api",
+	"primitives/api/proc-macro",
+	"primitives/api/test",
 	"primitives/application-crypto",
 	"primitives/application-crypto/test",
+	"primitives/arithmetic",
+	"primitives/arithmetic/fuzzer",
 	"primitives/authority-discovery",
 	"primitives/authorship",
 	"primitives/block-builder",
 	"primitives/blockchain",
+	"primitives/chain-spec",
 	"primitives/consensus/aura",
 	"primitives/consensus/babe",
 	"primitives/consensus/common",
 	"primitives/consensus/pow",
 	"primitives/consensus/vrf",
 	"primitives/core",
-	"primitives/chain-spec",
 	"primitives/database",
 	"primitives/debug-derive",
-	"primitives/storage",
 	"primitives/externalities",
 	"primitives/finality-grandpa",
 	"primitives/inherents",
+	"primitives/io",
 	"primitives/keyring",
 	"primitives/keystore",
+	"primitives/npos-elections",
+	"primitives/npos-elections/compact",
+	"primitives/npos-elections/fuzzer",
 	"primitives/offchain",
 	"primitives/panic-handler",
-	"primitives/npos-elections",
-	"primitives/npos-elections/fuzzer",
-	"primitives/npos-elections/compact",
 	"primitives/rpc",
+	"primitives/runtime",
 	"primitives/runtime-interface",
 	"primitives/runtime-interface/proc-macro",
+	"primitives/runtime-interface/test",
 	"primitives/runtime-interface/test-wasm",
 	"primitives/runtime-interface/test-wasm-deprecated",
-	"primitives/runtime-interface/test",
+	"primitives/sandbox",
 	"primitives/serializer",
 	"primitives/session",
-	"primitives/api",
-	"primitives/api/proc-macro",
-	"primitives/api/test",
-	"primitives/arithmetic",
-	"primitives/arithmetic/fuzzer",
-	"primitives/io",
-	"primitives/runtime",
-	"primitives/sandbox",
 	"primitives/staking",
-	"primitives/std",
-	"primitives/version",
 	"primitives/state-machine",
+	"primitives/std",
+	"primitives/storage",
 	"primitives/tasks",
-	"primitives/timestamp",
 	"primitives/test-primitives",
-	"primitives/transaction-pool",
+	"primitives/timestamp",
 	"primitives/tracing",
+	"primitives/transaction-pool",
 	"primitives/trie",
 	"primitives/utils",
+	"primitives/version",
 	"primitives/wasm-interface",
 	"test-utils/client",
 	"test-utils/derive",
@@ -183,6 +182,7 @@ members = [
 	"utils/frame/frame-utilities-cli",
 	"utils/frame/rpc/support",
 	"utils/frame/rpc/system",
+	"utils/prometheus",
 	"utils/wasm-builder",
 ]