simplify Swift template

packages/templates/app/ios/Template/PolywrapDemo.swift

@@ -2,26 +2,15 @@ import UIKit
 import PolywrapClient
 
 func polywrapDemo() {
-    print("Invoking: Logging.info(...)")
+    print("Invoking: Sha3.sha3_256(...)")
 
-    let logger = Logging()
-    let logArgs = LoggingArgsLog(level: .INFO, message: "Hello there")
-    try? logger.log(args: logArgs)
-
-    // Ethers.encodeParams
-    print("Invoking: Ethers.encodeParams(...)")
-
-    let eth = Ethers()
-    let encodeArgs = EthersArgsEncodeParams(
-            types: ["address", "uint256"],
-            values: ["0xB1B7586656116D546033e3bAFF69BFcD6592225E", "500"]
-    )
-    do {
-        let encoded = try eth.encodeParams(args: encodeArgs)
-        print("Ethers.encodeParams:\n\(encoded)")
+    let sha3 = Sha3()
+    let sha3_256Args = Sha3ArgsSha3256(message: "Hello Polywrap!")
+
+    do{
+        let result = try sha3.sha3_256(args: sha3_256Args)
+        print("Sha3.sha3_256: \(result)")
     } catch {
-        let logArgs = LoggingArgsLog(level: .ERROR, message: "Error - Ethers.encodeParams: \(error)")
-        try? logger.log(args: logArgs)
-        return
+        print("Error - Sha3.sha3_256: \(error)")
     }
-}
+}

packages/templates/app/ios/polywrap.graphql

@@ -1,2 +1 @@
-#import * into Logging from "wrapscan.io/polywrap/logger@1.0"
-#import * into Ethers from "wrapscan.io/polywrap/ethers@1.1"
+#import * into Sha3 from "wrapscan.io/polywrap/sha3@1"

packages/templates/app/ios/polywrap.yaml

@@ -1,4 +1,4 @@
-format: 0.4.0
+format: 0.5.0
 project:
   name: Sample
   type: app/swift