Integrate coordinator with MessageQueue and RocksDB

Also resolves a couple TODOs.

Cargo.lock

@@ -8572,11 +8572,14 @@ dependencies = [
  "modular-frost",
  "parity-scale-codec",
  "rand_core 0.6.4",
+ "rocksdb",
  "schnorr-signatures",
- "schnorrkel",
  "serai-client",
  "serai-db",
+ "serai-env",
+ "serai-message-queue",
  "serai-processor-messages",
+ "serde_json",
  "sp-application-crypto",
  "tokio",
  "tributary-chain",
@@ -8636,7 +8639,8 @@ dependencies = [
  "hex",
  "jsonrpsee",
  "lazy_static",
- "log",
+ "rand_core 0.6.4",
+ "reqwest",
  "rocksdb",
  "schnorr-signatures",
  "serai-db",
@@ -8645,6 +8649,7 @@ dependencies = [
  "serde",
  "serde_json",
  "tokio",
+ "zeroize",
 ]
 
 [[package]]
@@ -8738,9 +8743,7 @@ dependencies = [
  "parity-scale-codec",
  "rand_chacha 0.3.1",
  "rand_core 0.6.4",
- "reqwest",
  "rocksdb",
- "schnorr-signatures",
  "secp256k1",
  "serai-client",
  "serai-db",