fix: Convert vendor/pezkuwi-subxt from submodule to regular directory

vendor/pezkuwi-subxt/subxt/examples/storage_fetch_dynamic.rs

@@ -0,0 +1,34 @@
+#![allow(missing_docs)]
+use subxt::dynamic::{At, Value};
+use subxt::utils::AccountId32;
+use subxt::{OnlineClient, PolkadotConfig};
+use pezkuwi_subxt_signer::sr25519::dev;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Create a new API client, configured to talk to Polkadot nodes.
+    let api = OnlineClient::<PolkadotConfig>::new().await?;
+
+    // Build a dynamic storage query to access account information.
+    // here, we assume that there is one value to provide at this entry
+    // to access a value; an AccountId32. In this example we don't know the
+    // return type and so we set it to `Value`, which anything can decode into.
+    let account: AccountId32 = dev::alice().public_key().into();
+    let storage_query = subxt::dynamic::storage::<(AccountId32,), Value>("System", "Account");
+
+    // Use that query to access a storage entry, fetch a result and decode the value.
+    let client_at = api.storage().at_latest().await?;
+    let account_info = client_at
+        .entry(storage_query)?
+        .fetch((account,))
+        .await?
+        .decode()?;
+
+    // With out `Value` type we can dig in to find what we want using the `At`
+    // trait and `.at()` method that this provides on the Value.
+    println!(
+        "Alice has free balance: {}",
+        account_info.at("data").at("free").unwrap()
+    );
+    Ok(())
+}