pvf-precheck: PVF pre-checker subsystem (#4643)

This commit implements the last major piece of #3211: the subsystem that
tracks PVFs that require voting, issues pre-check requests to
candidate-validation and makes sure that the votes are submitted to the
chain.

polkadot/Cargo.lock

@@ -6467,6 +6467,29 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "polkadot-node-core-pvf-checker"
+version = "0.9.13"
+dependencies = [
+ "futures 0.3.19",
+ "futures-timer",
+ "polkadot-node-primitives",
+ "polkadot-node-subsystem",
+ "polkadot-node-subsystem-test-helpers",
+ "polkadot-node-subsystem-util",
+ "polkadot-overseer",
+ "polkadot-primitives",
+ "polkadot-primitives-test-helpers",
+ "sc-keystore",
+ "sp-application-crypto",
+ "sp-core",
+ "sp-keyring",
+ "sp-keystore",
+ "sp-runtime",
+ "thiserror",
+ "tracing",
+]
+
 [[package]]
 name = "polkadot-node-core-runtime-api"
 version = "0.9.13"
@@ -7050,6 +7073,7 @@ dependencies = [
  "polkadot-node-core-dispute-coordinator",
  "polkadot-node-core-parachains-inherent",
  "polkadot-node-core-provisioner",
+ "polkadot-node-core-pvf-checker",
  "polkadot-node-core-runtime-api",
  "polkadot-node-network-protocol",
  "polkadot-node-primitives",