[sui-tool] dump-packages uses GraphQL

## Description

Replace the original implementation of the dump-packages
command (which requires access to an indexer database) with an
implementation that reads from a GraphQL service. The former is not
readily accessible, but the latter should be.

The new tool is also able to run incrementally: Fetching only packages
created before a certain checkpoint, or pick up where a previous
invocation took off to fetch new packages that were introduced since.

## Test plan

Ran a test invocation, on our experimental read replica. With a max
page size of 200, I was able to fetch 17000 packages (all the packages
at the time the read replica was created) in 3 minutes.

Cargo.toml

@@ -130,6 +130,7 @@ members = [
     "crates/sui-open-rpc",
     "crates/sui-open-rpc-macros",
     "crates/sui-oracle",
+    "crates/sui-package-dump",
     "crates/sui-package-management",
     "crates/sui-package-resolver",
     "crates/sui-proc-macros",
@@ -305,6 +306,8 @@ criterion = { version = "0.5.0", features = [
 ] }
 crossterm = "0.25.0"
 csv = "1.2.1"
+cynic = { version = "3.7.3", features = ["http-reqwest"] }
+cynic-codegen = "= 3.7.3"
 dashmap = "5.5.3"
 # datatest-stable = "0.1.2"
 datatest-stable = { git = "https://github.com/nextest-rs/datatest-stable.git", rev = "72db7f6d1bbe36a5407e96b9488a581f763e106f" }
@@ -628,6 +631,7 @@ sui-network = { path = "crates/sui-network" }
 sui-node = { path = "crates/sui-node" }
 sui-open-rpc = { path = "crates/sui-open-rpc" }
 sui-open-rpc-macros = { path = "crates/sui-open-rpc-macros" }
+sui-package-dump = { path = "crates/sui-package-dump" }
 sui-package-management = { path = "crates/sui-package-management" }
 sui-package-resolver = { path = "crates/sui-package-resolver" }
 sui-proc-macros = { path = "crates/sui-proc-macros" }

crates/sui-package-dump/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "sui-package-dump"
+version.workspace = true
+authors = ["Mysten Labs <[email protected]"]
+license = "Apache-2.0"
+publish = false
+edition = "2021"
+
+[dependencies]
+anyhow.workspace = true
+bcs.workspace = true
+cynic.workspace = true
+fastcrypto.workspace = true
+move-core-types.workspace = true
+reqwest.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+sui-types.workspace = true
+tracing.workspace = true
+
+[build-dependencies]
+cynic-codegen.workspace = true

crates/sui-package-dump/build.rs

@@ -0,0 +1,10 @@
+// Copyright (c) Mysten Labs, Inc.
+// SPDX-License-Identifier: Apache-2.0
+
+fn main() {
+    cynic_codegen::register_schema("sui")
+        .from_sdl_file("../sui-graphql-rpc/schema.graphql")
+        .unwrap()
+        .as_default()
+        .unwrap();
+}

crates/sui-package-dump/src/client.rs

@@ -0,0 +1,39 @@
+// Copyright (c) Mysten Labs, Inc.
+// SPDX-License-Identifier: Apache-2.0
+
+use anyhow::{anyhow, Context, Result};
+use cynic::{http::ReqwestExt, Operation, QueryBuilder};
+use reqwest::IntoUrl;
+use serde::{de::DeserializeOwned, Serialize};
+
+pub(crate) struct Client {
+    inner: reqwest::Client,
+    url: reqwest::Url,
+}
+
+impl Client {
+    /// Create a new GraphQL client, talking to a Sui GraphQL service at `url`.
+    pub(crate) fn new(url: impl IntoUrl) -> Result<Self> {
+        Ok(Self {
+            inner: reqwest::Client::builder()
+                .user_agent(concat!("sui-package-dump/", env!("CARGO_PKG_VERSION")))
+                .build()
+                .context("Failed to create GraphQL client")?,
+            url: url.into_url().context("Invalid RPC URL")?,
+        })
+    }
+
+    pub(crate) async fn query<Q, V>(&self, query: Operation<Q, V>) -> Result<Q>
+    where
+        V: Serialize,
+        Q: DeserializeOwned + QueryBuilder<V> + 'static,
+    {
+        self.inner
+            .post(self.url.clone())
+            .run_graphql(query)
+            .await
+            .context("Failed to send GraphQL query")?
+            .data
+            .ok_or_else(|| anyhow!("Empty response to query"))
+    }
+}