- add: Service think

Nebula.Launcher/Services/ConfigurationService.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Nebula.Launcher.Services;
+
+public class ConVar
+{
+    public string Name { get; }
+    public Type Type { get; }
+    public object? DefaultValue { get; }
+
+    private ConVar(string name, Type type, object? defaultValue)
+    {
+        Name = name;
+        Type = type;
+        DefaultValue = defaultValue;
+    }
+
+    public static ConVar Build<T>(string name, T? defaultValue = default)
+    {
+        return new ConVar(name, typeof(T), defaultValue);
+    }
+}
+
+[ServiceRegister]
+public class ConfigurationService
+{
+    public ConfigurationService()
+    {
+        
+    }
+
+    public object? GetConfigValue(ConVar conVar)
+    {
+        return conVar.DefaultValue;
+    }
+
+    public T? GetConfigValue<T>(ConVar conVar)
+    {
+        var value = GetConfigValue(conVar);
+        if (value is not T tv) return default;
+        return tv;
+    }
+
+    public bool TryGetConfigValue(ConVar conVar,[NotNullWhen(true)] out object? value)
+    {
+        value = GetConfigValue(conVar);
+        return value != null;
+    }
+
+    public bool TryGetConfigValue<T>(ConVar conVar, [NotNullWhen(true)] out T? value)
+    {
+        value = GetConfigValue<T>(conVar);
+        return value != null;
+    }
+
+    public void SetValue(ConVar conVar, object value)
+    {
+        if(conVar.Type != value.GetType()) 
+            return;
+    }
+}