Finished compile time plugin loading. Refactored plugin loading. Extended build helper script

Resources/Scripts/Helpers/CommandHelper.cs

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+using System.Diagnostics;
+
+namespace Scripts.Helpers;
+
+public class CommandHelper
+{
+    public async Task Run(string program, string arguments, string? workingDir = null)
+    {
+        var process = await RunRaw(program, arguments, workingDir);
+
+        await process.WaitForExitAsync();
+
+        if (process.ExitCode != 0)
+            throw new Exception($"The command '{program} {arguments}' failed with exit code: {process.ExitCode}");
+    }
+    
+    private Task<Process> RunRaw(string program, string arguments, string? workingDir = null)
+    {
+        var psi = new ProcessStartInfo()
+        {
+            FileName = program,
+            Arguments = arguments,
+            WorkingDirectory = string.IsNullOrEmpty(workingDir) ? Directory.GetCurrentDirectory() : workingDir
+        };
+        
+        var process = Process.Start(psi)!;
+
+        return Task.FromResult(process);
+    }
+}

Resources/Scripts/Helpers/StartupClassDetector.cs

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+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+
+namespace Scripts.Helpers;
+
+public class StartupClassDetector
+{
+    public bool Check(string content, out string fullName)
+    {
+        var tree = CSharpSyntaxTree.ParseText(content);
+        var root = tree.GetCompilationUnitRoot();
+        
+        var mscorlib = MetadataReference.CreateFromFile(typeof(object).Assembly.Location);
+        var compilation = CSharpCompilation.Create("MyAnalysis", [tree], [mscorlib]);
+
+        var model = compilation.GetSemanticModel(tree);
+
+        var classDeclarations = root.DescendantNodes().OfType<ClassDeclarationSyntax>();
+
+        foreach (var classDecl in classDeclarations)
+        {
+            var symbol = model.GetDeclaredSymbol(classDecl);
+            
+            if(symbol == null)
+                continue;
+            
+            var hasAttribute = symbol.GetAttributes().Any(attribute =>
+            {
+                if (attribute.AttributeClass == null)
+                    return false;
+
+                return attribute.AttributeClass.Name.Contains("PluginStartup");
+            });
+
+            if (hasAttribute)
+            {
+                fullName = symbol.ContainingNamespace.ToDisplayString() + "." + classDecl.Identifier.ValueText;
+                return true;
+            }
+        }
+
+        fullName = "";
+        return false;
+    }
+}