feat: print out warning if wallet grpc connections fails (#5195)

Description
---
This prints out a help message if the Miner's wallet grpc connection fails. This asks if the user has enabled the grpc of the wallet and provides the command to enable it. 

How Has This Been Tested?
---
Manual

applications/tari_miner/src/run_miner.rs

@@ -167,7 +167,18 @@ async fn connect(config: &MinerConfig) -> Result<(BaseNodeClient<Channel>, Walle
     let base_node_addr = multiaddr_to_socketaddr(&config.base_node_grpc_address)?;
     info!(target: LOG_TARGET, "🔗 Connecting to base node at {}", base_node_addr);
     let node_conn = BaseNodeClient::connect(format!("http://{}", base_node_addr)).await?;
-    let wallet_conn = connect_wallet(config).await?;
+
+    let wallet_conn = match connect_wallet(config).await {
+        Ok(client) => client,
+        Err(e) => {
+            error!(target: LOG_TARGET, "Could not connect to wallet");
+            error!(
+                target: LOG_TARGET,
+                "Is its grpc running? try running it with `--enable-grpc` or enable it in config"
+            );
+            return Err(e);
+        },
+    };
 
     Ok((node_conn, wallet_conn))
 }