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

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

@@ -0,0 +1,48 @@
+#![allow(missing_docs)]
+use subxt::{OnlineClient, PolkadotConfig};
+
+#[subxt::subxt(runtime_metadata_path = "../artifacts/polkadot_metadata_small.scale")]
+pub mod polkadot {}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Create a client to use:
+    let api = OnlineClient::<PolkadotConfig>::new().await?;
+
+    // Get events for the latest block:
+    let events = api.events().at_latest().await?;
+
+    // We can dynamically decode events:
+    println!("Dynamic event details:");
+    for event in events.iter() {
+        let event = event?;
+
+        let pallet = event.pallet_name();
+        let variant = event.variant_name();
+        let field_values = event.decode_as_fields::<scale_value::Value>()?;
+
+        println!("{pallet}::{variant}: {field_values}");
+    }
+
+    // Or we can attempt to statically decode them into the root Event type:
+    println!("Static event details:");
+    for event in events.iter() {
+        let event = event?;
+
+        if let Ok(ev) = event.as_root_event::<polkadot::Event>() {
+            println!("{ev:?}");
+        } else {
+            println!("<Cannot decode event>");
+        }
+    }
+
+    // Or we can look for specific events which match our statically defined ones:
+    let transfer_event = events.find_first::<polkadot::balances::events::Transfer>()?;
+    if let Some(ev) = transfer_event {
+        println!("  - Balance transfer success: value: {:?}", ev.amount);
+    } else {
+        println!("  - No balance transfer event found in this block");
+    }
+
+    Ok(())
+}