Release 0.4.8 with Android file imports

Services/IncomingFileService.cs

@@ -0,0 +1,20 @@
+using System.Collections.Concurrent;
+
+namespace LMEMappeCatastaliApp.Services;
+
+public sealed class IncomingFileService
+{
+    private readonly ConcurrentQueue<IncomingFile> _files = new();
+    public static IncomingFileService Shared { get; } = new();
+    public event Action? FileAvailable;
+
+    public void Enqueue(IncomingFile file)
+    {
+        _files.Enqueue(file);
+        MainThread.BeginInvokeOnMainThread(() => FileAvailable?.Invoke());
+    }
+
+    public bool TryDequeue(out IncomingFile? file) => _files.TryDequeue(out file);
+}
+
+public sealed record IncomingFile(string Path, string FileName, string? ContentType);