Add a client for BankForks (#10728)

Also:
* Use BanksClient in solana-tokens

Cargo.lock

@@ -688,6 +688,17 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "derivative"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb582b60359da160a9477ee80f15c8d784c477e69c217ef2cdd4169c24ea380f"
+dependencies = [
+ "proc-macro2 1.0.19",
+ "quote 1.0.6",
+ "syn 1.0.27",
+]
+
 [[package]]
 name = "dialoguer"
 version = "0.6.2"
@@ -1230,7 +1241,7 @@ dependencies = [
  "log 0.4.8",
  "slab",
  "tokio 0.2.22",
- "tokio-util",
+ "tokio-util 0.3.1",
 ]
 
 [[package]]
@@ -3241,6 +3252,45 @@ dependencies = [
  "solana-version",
 ]
 
+[[package]]
+name = "solana-banks-client"
+version = "1.4.0"
+dependencies = [
+ "async-trait",
+ "bincode",
+ "futures 0.3.5",
+ "solana-banks-interface",
+ "solana-banks-server",
+ "solana-runtime",
+ "solana-sdk 1.4.0",
+ "tarpc",
+ "tokio 0.2.22",
+ "tokio-serde",
+]
+
+[[package]]
+name = "solana-banks-interface"
+version = "1.4.0"
+dependencies = [
+ "serde",
+ "solana-sdk 1.4.0",
+ "tarpc",
+]
+
+[[package]]
+name = "solana-banks-server"
+version = "1.4.0"
+dependencies = [
+ "bincode",
+ "futures 0.3.5",
+ "solana-banks-interface",
+ "solana-runtime",
+ "solana-sdk 1.4.0",
+ "tarpc",
+ "tokio 0.2.22",
+ "tokio-serde",
+]
+
 [[package]]
 name = "solana-bench-exchange"
 version = "1.4.0"
@@ -3491,6 +3541,7 @@ dependencies = [
  "serial_test",
  "serial_test_derive",
  "solana-account-decoder",
+ "solana-banks-server",
  "solana-bpf-loader-program",
  "solana-budget-program",
  "solana-clap-utils",
@@ -4383,6 +4434,8 @@ dependencies = [
  "indicatif",
  "pickledb",
  "serde",
+ "solana-banks-client",
+ "solana-banks-server",
  "solana-clap-utils",
  "solana-cli-config",
  "solana-client",
@@ -4391,9 +4444,10 @@ dependencies = [
  "solana-runtime",
  "solana-sdk 1.4.0",
  "solana-stake-program",
- "solana-transaction-status",
  "tempfile",
  "thiserror",
+ "tokio 0.2.22",
+ "url 2.1.1",
 ]
 
 [[package]]
@@ -4748,6 +4802,36 @@ dependencies = [
  "xattr",
 ]
 
+[[package]]
+name = "tarpc"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7262a81ff505d04617aabee6f3e416eafd4d67f856832196c221ffd434efda47"
+dependencies = [
+ "fnv",
+ "futures 0.3.5",
+ "humantime 1.3.0",
+ "log 0.4.8",
+ "pin-project",
+ "rand 0.7.3",
+ "serde",
+ "tarpc-plugins",
+ "tokio 0.2.22",
+ "tokio-serde",
+ "tokio-util 0.2.0",
+]
+
+[[package]]
+name = "tarpc-plugins"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edbaf92ceea0a2ab555bea18a47a891e46ba2d6f930ec9506771662f4ab82bb7"
+dependencies = [
+ "proc-macro2 1.0.19",
+ "quote 1.0.6",
+ "syn 1.0.27",
+]
+
 [[package]]
 name = "tempdir"
 version = "0.3.7"
@@ -5074,6 +5158,20 @@ dependencies = [
  "webpki",
 ]
 
+[[package]]
+name = "tokio-serde"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebdd897b01021779294eb09bb3b52b6e11b0747f9f7e333a84bef532b656de99"
+dependencies = [
+ "bincode",
+ "bytes 0.5.4",
+ "derivative",
+ "futures 0.3.5",
+ "pin-project",
+ "serde",
+]
+
 [[package]]
 name = "tokio-sync"
 version = "0.1.8"
@@ -5181,6 +5279,20 @@ dependencies = [
  "tokio-reactor",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "571da51182ec208780505a32528fc5512a8fe1443ab960b3f2f3ef093cd16930"
+dependencies = [
+ "bytes 0.5.4",
+ "futures-core",
+ "futures-sink",
+ "log 0.4.8",
+ "pin-project-lite",
+ "tokio 0.2.22",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.3.1"
@@ -5225,7 +5337,7 @@ dependencies = [
  "prost-derive",
  "tokio 0.2.22",
  "tokio-rustls 0.14.0",
- "tokio-util",
+ "tokio-util 0.3.1",
  "tower",
  "tower-balance",
  "tower-load",