chore: fix all examples to compile and expand workspace

- Add pumpfun_copy_trading and pumpfun_sniper_trading to workspace members
- Add grpc_recv_us field to all TradeBuyParams/TradeSellParams in examples
- Switch address_lookup and nonce_cache to sol-parser-sdk, use event is_cashback_coin
- Remove invalid rustls call from pumpfun examples for successful build
- All 18 examples pass cargo check --workspace

Made-with: Cursor

examples/seed_trading/src/main.rs

@@ -47,6 +47,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         gas_fee_strategy: gas_fee_strategy.clone(),
         simulate: false,
         use_exact_sol_amount: None,
+        grpc_recv_us: None,
     };
     client.buy(buy_params).await?;
 
@@ -87,6 +88,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         fixed_output_token_amount: None,
         gas_fee_strategy: gas_fee_strategy,
         simulate: false,
+        grpc_recv_us: None,
     };
     client.sell(sell_params).await?;