[PTRun] PowerToys Run - plugin dependency loading (#30513)

* Updated the Wox.Plugin to correctly load and resolve plugin dependecies

* Included new plugin.props in all plugins to enable dynamic dependecy loading

* Updated dev docs to include new plugin.props in plugins

* Fixed double dependecy loading bug

* - Updated to only use dynamic loading when explicitly set by the plugin.
- Removed no longer required props from default plugins which do not need dynamic loading.
- Updated dev-docs to align with latest changes

* Removed line spacing changes in plugins csproj

* fixed spelling

* csproj cleanup

* removed unnecessary null checking

---------

Co-authored-by: Corey Hayward <coreyh@tigereyeconsulting.com>

src/modules/launcher/Wox.Plugin/PluginLoadContext.cs

@@ -0,0 +1,44 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.Loader;
+
+namespace Wox.Plugin
+{
+    internal class PluginLoadContext : AssemblyLoadContext
+    {
+        private AssemblyDependencyResolver _resolver;
+
+        public PluginLoadContext(string pluginPath)
+        {
+            _resolver = new AssemblyDependencyResolver(pluginPath);
+        }
+
+        protected override Assembly Load(AssemblyName assemblyName)
+        {
+            string assemblyPath = _resolver.ResolveAssemblyToPath(assemblyName);
+            if (assemblyPath != null)
+            {
+                var existingAssembly = Default.Assemblies.FirstOrDefault(x => x.FullName == assemblyName.FullName);
+                return existingAssembly ?? LoadFromAssemblyPath(assemblyPath);
+            }
+
+            return null;
+        }
+
+        protected override IntPtr LoadUnmanagedDll(string unmanagedDllName)
+        {
+            string libraryPath = _resolver.ResolveUnmanagedDllToPath(unmanagedDllName);
+            if (libraryPath != null)
+            {
+                return LoadUnmanagedDllFromPath(libraryPath);
+            }
+
+            return IntPtr.Zero;
+        }
+    }
+}