Rework solution structure to allow more types of library projects (#196)

* Rename avalonia & wpf samples

* Rename rest of samples

* fix sample readme

* Fix compat util tests

* rename / move all src projects

* remove package lock files and move libC# again

* Add rust lib and cargo workspace

* Replace locksmith lib with new filelocksmith-rs library

* Deprecated type

* fix setup compile

* Use thiserror for error handling

* Rename some enums and formatting

* Add missing SHA256

* wip c++ library

* cpp wip

* alphabetize readme

* Try to get build working again

* Fix some conditionally compiled bits

* cross config should be in workspace root

* Fix PathHelper for new rust target dir

* Missed one old path to velopack.csproj

* remove obsolete coverage code

* testawareapp.exe no longer exists

samples/CSharpAvalonia/MemoryLogger.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Text;
+using Microsoft.Extensions.Logging;
+
+namespace CSharpAvalonia;
+
+public class LogUpdatedEventArgs : EventArgs
+{
+    public string Text { get; set; }
+}
+
+public class MemoryLogger : ILogger
+{
+    public event EventHandler<LogUpdatedEventArgs> LogUpdated;
+    private readonly StringBuilder _sb = new StringBuilder();
+
+    public IDisposable BeginScope<TState>(TState state)
+    {
+        return null;
+    }
+
+    public bool IsEnabled(LogLevel logLevel)
+    {
+        return true;
+    }
+
+    public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
+    {
+        lock (_sb) {
+            var message = formatter(state, exception);
+            if (exception != null) message += "\n" + exception.ToString();
+            Console.WriteLine("log: " + message);
+            _sb.AppendLine(message);
+            LogUpdated?.Invoke(this, new LogUpdatedEventArgs { Text = _sb.ToString() });
+        }
+    }
+
+    public override string ToString()
+    {
+        lock (_sb) {
+            return _sb.ToString();
+        }
+    }
+}