Start adding Miniflux support plus other cleanup

- Modernize old async code
- Update to .NET 10
- Adjust namespace
- Bypass update check when debugging

Application/Properties/Resources.Designer.cs

@@ -19,7 +19,7 @@ namespace FeedCenter.Properties {
     // class via a tool like ResGen or Visual Studio.
     // To add or remove a member, edit your .ResX file then rerun ResGen
     // with the /str option, or rebuild your VS project.
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "18.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     public class Resources {
@@ -141,6 +141,15 @@ namespace FeedCenter.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Miniflux.
+        /// </summary>
+        public static string AccountTypeMiniflux {
+            get {
+                return ResourceManager.GetString("AccountTypeMiniflux", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to URL.
         /// </summary>