move examples to main repo so we can include_str them for publishing (#993)

* move exampels to main repo so we can include_str them for publishing

* update CI to not break examples

subxt/examples/storage_iterating_dynamic.rs

@@ -0,0 +1,25 @@
+use subxt::{OnlineClient, PolkadotConfig};
+
+#[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 iterate account information.
+    let storage_query = subxt::dynamic::storage_root("System", "Account");
+
+    // Use that query to return an iterator over the results.
+    let mut results = api
+        .storage()
+        .at_latest()
+        .await?
+        .iter(storage_query, 10)
+        .await?;
+
+    while let Some((key, value)) = results.next().await? {
+        println!("Key: 0x{}", hex::encode(&key));
+        println!("Value: {:?}", value.to_value()?);
+    }
+
+    Ok(())
+}