Migrated build script to C# (#401)

app/Build/Tools/Environment.cs

@@ -0,0 +1,77 @@
+using System.Runtime.InteropServices;
+
+namespace Build.Tools;
+
+public static class Environment
+{
+    public const string DOTNET_VERSION = "net9.0";
+    public static readonly Encoding UTF8_NO_BOM = new UTF8Encoding(false);
+    
+    private static readonly Dictionary<RID, string> ALL_RIDS = Enum.GetValues<RID>().Select(rid => new KeyValuePair<RID, string>(rid, rid.ToName())).ToDictionary(kvp => kvp.Key, kvp => kvp.Value);
+    
+    public static bool IsWorkingDirectoryValid()
+    {
+        var currentDirectory = Directory.GetCurrentDirectory();
+        var mainFile = Path.Combine(currentDirectory, "Program.cs");
+        var projectFile = Path.Combine(currentDirectory, "Build Script.csproj");
+        
+        if (!currentDirectory.EndsWith("Build", StringComparison.Ordinal) || !File.Exists(mainFile) || !File.Exists(projectFile))
+        {
+            Console.WriteLine("The current directory is not a valid working directory for the build script. Go to the /app/Build directory within the git repository.");
+            return false;
+        }
+        
+        return true;
+    }
+
+    public static string GetAIStudioDirectory()
+    {
+        var currentDirectory = Directory.GetCurrentDirectory();
+        var directory = Path.Combine(currentDirectory, "..", "MindWork AI Studio");
+        return Path.GetFullPath(directory);
+    }
+    
+    public static string GetRustRuntimeDirectory()
+    {
+        var currentDirectory = Directory.GetCurrentDirectory();
+        var directory = Path.Combine(currentDirectory, "..", "..", "runtime");
+        return Path.GetFullPath(directory);
+    }
+    
+    public static string GetMetadataPath()
+    {
+        var currentDirectory = Directory.GetCurrentDirectory();
+        var directory = Path.Combine(currentDirectory, "..", "..", "metadata.txt");
+        return Path.GetFullPath(directory);
+    }
+
+    public static string? GetOS()
+    {
+        if(RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            return "windows";
+        
+        if(RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+            return "linux";
+        
+        if(RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            return "darwin";
+
+        Console.WriteLine($"Error: Unsupported OS '{RuntimeInformation.OSDescription}'");
+        return null;
+    }
+    
+    public static IEnumerable<RID> GetRidsForCurrentOS()
+    {
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            return ALL_RIDS.Where(rid => rid.Value.StartsWith("win-", StringComparison.Ordinal)).Select(n => n.Key);
+        
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            return ALL_RIDS.Where(rid => rid.Value.StartsWith("osx-", StringComparison.Ordinal)).Select(n => n.Key);
+        
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+            return ALL_RIDS.Where(rid => rid.Value.StartsWith("linux-", StringComparison.Ordinal)).Select(n => n.Key);
+        
+        Console.WriteLine($"Error: Unsupported OS '{RuntimeInformation.OSDescription}'");
+        return [];
+    }
+}

app/Build/Tools/RID.cs

@@ -0,0 +1,15 @@
+namespace Build.Tools;
+
+public enum RID
+{
+    NONE,
+    
+    WIN_X64,
+    WIN_ARM64,
+    
+    LINUX_X64,
+    LINUX_ARM64,
+    
+    OSX_X64,
+    OSX_ARM64,
+}

app/Build/Tools/RIDExtensions.cs

@@ -0,0 +1,18 @@
+namespace Build.Tools;
+
+public static class RIDExtensions
+{
+    public static string ToName(this RID rid) => rid switch
+    {
+        RID.WIN_X64 => "win-x64",
+        RID.WIN_ARM64 => "win-arm64",
+        
+        RID.LINUX_X64 => "linux-x64",
+        RID.LINUX_ARM64 => "linux-arm64",
+        
+        RID.OSX_X64 => "osx-x64",
+        RID.OSX_ARM64 => "osx-arm64",
+        
+        _ => string.Empty,
+    };
+}