feat: protobuf-generated json configs for the main node (BFT-371) (#458)

example json config:
```
{
  "httpPort": 3050,
  "httpUrl": "http://localhost:3050",
  "wsPort": 3051,
  "wsUrl": "ws://localhost:3051",
  "reqEntitiesLimit": 10000,
  "filtersLimit": 10000,
  "subscriptionsLimit": 10000,
  "pubsubPollingInterval": "200",
  "threadsPerServer": 1,
  "maxNonceAhead": 50,
  "gasPriceScaleFactor": 1.2,
  "accountPks": {
    "keys": [
      "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE=",
      "AgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgI="
    ]
  },
  "estimateGasScaleFactor": 1.2,
  "estimateGasAcceptableOverestimation": 1000,
  "maxTxSize": "1000000"
}
```

Cargo.toml

@@ -33,6 +33,7 @@ members = [
     "core/lib/state",
     "core/lib/storage",
     "core/lib/types",
+    "core/lib/protobuf_config",
     "core/lib/utils",
     "core/lib/vlog",
     "core/lib/multivm",

core/lib/basic_types/src/basic_fri_types.rs

@@ -2,7 +2,7 @@
 
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Deserialize, Serialize, Clone, Eq, Hash, PartialEq)]
+#[derive(Debug, Deserialize, Serialize, Clone, Eq, Hash, PartialEq, PartialOrd, Ord)]
 pub struct CircuitIdRoundTuple {
     pub circuit_id: u8,
     pub aggregation_round: u8,

core/lib/config/Cargo.toml

@@ -13,4 +13,5 @@ categories = ["cryptography"]
 zksync_basic_types = { path = "../../lib/basic_types" }
 
 anyhow = "1.0"
+rand = "0.8"
 serde = { version = "1.0", features = ["derive"] }

core/lib/config/src/configs/database.rs

@@ -123,7 +123,7 @@ impl DBConfig {
 /// Collection of different database URLs and general PostgreSQL options.
 /// All the entries are optional, since some components may only require a subset of them,
 /// and any component may have overrides.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct PostgresConfig {
     /// URL for the main (sequencer) database.
     pub master_url: Option<String>,

core/lib/config/src/configs/proof_data_handler.rs

@@ -15,6 +15,7 @@ pub struct ProofDataHandlerConfig {
     pub protocol_version_loading_mode: ProtocolVersionLoadingMode,
     pub fri_protocol_version_id: u16,
 }
+
 impl ProofDataHandlerConfig {
     pub fn proof_generation_timeout(&self) -> Duration {
         Duration::from_secs(self.proof_generation_timeout_in_secs as u64)

core/lib/config/src/lib.rs

@@ -6,3 +6,4 @@ pub use crate::configs::{
 };
 
 pub mod configs;
+pub mod testonly;