Add NWBrowser and NWConnection code.

TODO: Refactor all of this stuff better

KlipperMon/PrinterRequestManager.swift

@@ -0,0 +1,47 @@
+//
+//  PrinterRequestManager.swift
+//  KlipperMon
+//
+//  Created by maddiefuzz on 2/7/23.
+//
+
+import Foundation
+import Network
+
+@MainActor
+class PrinterRequestManager: ObservableObject {
+    @Published var printerObjectsQuery: PrinterObjectsQuery?
+    
+    @Published var printerCommsOkay = false
+    
+    static let shared = PrinterRequestManager()
+    
+    //let nwBrowser = NWBrowser(for: .bonjour(type: "_moonraker._tcp", domain: "local."), using: .tcp)
+    
+    private init() {
+        
+    }
+    
+    func queryPrinterStats() async {
+        guard let url = URL(string: "http://10.0.21.39/printer/objects/query?extruder&virtual_sdcard&print_stats&heater_bed") else {
+            fatalError("Missing URL")
+        }
+        
+        let urlRequest = URLRequest(url: url)
+        do {
+            let (data, response) = try await URLSession.shared.data(for: urlRequest)
+            guard let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200 else {
+                print("Error with response.")
+                return
+            }
+            // handle data as JSON
+            let decoder = JSONDecoder()
+            printerObjectsQuery = try decoder.decode(PrinterObjectsQuery.self, from: data)
+            printerCommsOkay = true
+            //return printerObjectsQuery.result.status.extruder.temperature
+        } catch {
+            print("Exception thrown: \(error)")
+            printerCommsOkay = false
+        }
+    }
+}