[PM-22263] Integate Rust SDK to Seeder (#6150)

Adds a Rust SDK for performing seed related cryptograhic operations. It depends on internal portions of our Rust SDK. Primarily parts of the bitwarden-crypto crate.

util/RustSdk/RustSdkServiceFactory.cs

@@ -0,0 +1,21 @@
+namespace Bit.RustSDK;
+
+/// <summary>
+/// Factory for creating Rust SDK service instances
+/// </summary>
+public static class RustSdkServiceFactory
+{
+    /// <summary>
+    /// Creates a singleton instance of the Rust SDK service (thread-safe)
+    /// </summary>
+    /// <returns>A singleton IRustSdkService instance</returns>
+    public static RustSdkService CreateSingleton()
+    {
+        return SingletonHolder.Instance;
+    }
+
+    private static class SingletonHolder
+    {
+        internal static readonly RustSdkService Instance = new();
+    }
+}