Added Git Export Feature

- Added import algorithm
- Added FromJsonX() methods to data models
- Added possibility to work with temp. database file
- Added export processor to handle export process & triggers
- Added something changed event e.g. as export trigger
- Added possibility to import a JSON export
- Updated Git icon

I18N Commander/Processor/ExportProcessor.cs

@@ -0,0 +1,46 @@
+using DataModel.Database.Common;
+using Microsoft.Extensions.DependencyInjection;
+using Timer = System.Timers.Timer;
+
+namespace Processor;
+
+public static class ExportProcessor
+{
+    private static readonly Timer EXPORT_TIMER = new();
+    private static readonly object EXPORT_LOCK = new();
+    private static readonly SemaphoreSlim EXPORT_SEMAPHORE = new(2);
+
+    static ExportProcessor()
+    {
+        EXPORT_TIMER.Interval = 6_000; // 6 seconds
+        EXPORT_TIMER.AutoReset = false;
+        EXPORT_TIMER.Elapsed += async (sender, args) => await ExportToJson();
+    }
+
+    private static async Task ExportToJson()
+    {
+        if(!await EXPORT_SEMAPHORE.WaitAsync(1))
+            return;
+        
+        Monitor.Enter(EXPORT_LOCK);
+        try
+        {
+            await using var db = ProcessorMeta.ServiceProvider.GetRequiredService<DataContext>();
+            await db.ExportAsync(Environment.ExpandEnvironmentVariables(Path.Join(await AppSettings.GetAutoExportDestinationPath(), await AppSettings.GetAutoExportFilename())));
+        }
+        finally
+        {
+            Monitor.Exit(EXPORT_LOCK);
+            EXPORT_SEMAPHORE.Release();
+        }
+    }
+    
+    public static async Task TriggerExport()
+    {
+        if (!await AppSettings.GetAutoExportEnabled())
+            return;
+        
+        EXPORT_TIMER.Stop();
+        EXPORT_TIMER.Start();
+    }
+}

I18N Commander/Processor/Version.cs

@@ -2,5 +2,5 @@
 
 public static class Version
 {
-    public static string Text => $"v0.7.1 (2022-11-06), .NET {Environment.Version}";
+    public static string Text => $"v0.8.0 (2023-01-22), .NET {Environment.Version}";
 }