Restructure libsodium code

Author: StefanGreve

…stems.Security/Cryptography/Libsodium.cs …curity/Cryptography/Libsodium.Version.csAdvancedSystems.Security/Cryptography/Libsodium.cs renamed to AdvancedSystems.Security/Cryptography/Libsodium.Version.cs AdvancedSystems.Security/Cryptography/Libsodium.cs renamed to AdvancedSystems.Security/Cryptography/Libsodium.Version.cs

@@ -1,20 +1,20 @@
 using System;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 namespace AdvancedSystems.Security.Interop;
 
-internal partial class Libsodium
+internal static partial class Libsodium
 {
-    #region version.c
-
     [LibraryImport(NativeLibrary.LIBSODIUM, EntryPoint = "sodium_library_version_major")]
+    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
     internal static partial int SodiumLibraryVersionMajor();
 
     [LibraryImport(NativeLibrary.LIBSODIUM, EntryPoint = "sodium_library_version_minor")]
+    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
     internal static partial int SodiumLibraryVersionMinor();
 
     [LibraryImport(NativeLibrary.LIBSODIUM, EntryPoint = "sodium_version_string")]
+    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
     internal static partial IntPtr SodiumVersionString();
-
-    #endregion
 }

…cedSystems.Security/Interop/Libsodium.cs …ms.Security/Interop/Libsodium.Version.csAdvancedSystems.Security/Interop/Libsodium.cs renamed to AdvancedSystems.Security/Interop/Libsodium.Version.cs AdvancedSystems.Security/Interop/Libsodium.cs renamed to AdvancedSystems.Security/Interop/Libsodium.Version.cs

@@ -8,10 +8,6 @@ TODO
 
 ## Hash
 
-## Generic Hash Algorithms
-
-## PBKDF2 Derived Keys
-
 TODO
 
 ## RSACryptoProvider