Implemented a basic plugin system

Moonlight/App/Helpers/ComponentHelper.cs

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+using Microsoft.AspNetCore.Components;
+
+namespace Moonlight.App.Helpers;
+
+public class ComponentHelper
+{
+    public static RenderFragment FromType(Type type) => builder =>
+    {
+        builder.OpenComponent(0, type);
+        builder.CloseComponent();
+    };
+}

Moonlight/App/Plugin/MoonlightPlugin.cs

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+using Moonlight.App.Plugin.UI;
+using Moonlight.App.Plugin.UI.Servers;
+using Moonlight.App.Plugin.UI.Webspaces;
+
+namespace Moonlight.App.Plugin;
+
+public abstract class MoonlightPlugin
+{
+    public string Name { get; set; } = "N/A";
+    public string Author { get; set; } = "N/A";
+    public string Version { get; set; } = "N/A";
+    
+    public Func<ServerPageContext, Task>? OnBuildServerPage { get; set; }
+    public Func<WebspacePageContext, Task>? OnBuildWebspacePage { get; set; }
+}

Moonlight/App/Plugin/UI/Servers/ServerPageContext.cs

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+using Moonlight.App.Database.Entities;
+
+namespace Moonlight.App.Plugin.UI.Servers;
+
+public class ServerPageContext
+{
+    public List<ServerTab> Tabs { get; set; } = new();
+    public List<ServerSetting> Settings { get; set; } = new();
+    public Server Server { get; set; }
+    public User User { get; set; }
+}

Moonlight/App/Plugin/UI/Servers/ServerSetting.cs

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+using Microsoft.AspNetCore.Components;
+
+namespace Moonlight.App.Plugin.UI.Servers;
+
+public class ServerSetting
+{
+    public string Name { get; set; }
+    public RenderFragment Component { get; set; }
+}

Moonlight/App/Plugin/UI/Servers/ServerTab.cs

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+using Microsoft.AspNetCore.Components;
+
+namespace Moonlight.App.Plugin.UI.Servers;
+
+public class ServerTab
+{
+    public string Name { get; set; }
+    public string Route { get; set; }
+    public string Icon { get; set; }
+    public RenderFragment Component { get; set; }
+}

Moonlight/App/Plugin/UI/Webspaces/WebspacePageContext.cs

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+using Moonlight.App.Database.Entities;
+
+namespace Moonlight.App.Plugin.UI.Webspaces;
+
+public class WebspacePageContext
+{
+    public List<WebspaceTab> Tabs { get; set; } = new();
+    public User User { get; set; }
+    public WebSpace WebSpace { get; set; }
+}

Moonlight/App/Plugin/UI/Webspaces/WebspaceTab.cs

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+using Microsoft.AspNetCore.Components;
+
+namespace Moonlight.App.Plugin.UI.Webspaces;
+
+public class WebspaceTab
+{
+    public string Name { get; set; } = "N/A";
+    public string Route { get; set; } = "/";
+    public RenderFragment Component { get; set; }
+}

Moonlight/App/Services/PluginService.cs

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+using System.Reflection;
+using Moonlight.App.Database.Entities;
+using Moonlight.App.Helpers;
+using Moonlight.App.Plugin;
+using Moonlight.App.Plugin.UI;
+using Moonlight.App.Plugin.UI.Servers;
+using Moonlight.App.Plugin.UI.Webspaces;
+
+namespace Moonlight.App.Services;
+
+public class PluginService
+{
+    public List<MoonlightPlugin> Plugins { get; set; }
+
+    public PluginService()
+    {
+        LoadPlugins();
+    }
+    
+    private void LoadPlugins()
+    {
+        Plugins = new();
+
+        var pluginType = typeof(MoonlightPlugin);
+        
+        foreach (var pluginFile in Directory.EnumerateFiles(
+                     PathBuilder.Dir(Directory.GetCurrentDirectory(), "storage", "plugins"))
+                     .Where(x => x.EndsWith(".dll")))
+        {
+            var assembly = Assembly.LoadFile(pluginFile);
+
+            foreach (var type in assembly.GetTypes())
+            {
+                if (type.IsSubclassOf(pluginType))
+                {
+                    var plugin = (Activator.CreateInstance(type) as MoonlightPlugin)!;
+                    
+                    Logger.Info($"Loaded plugin '{plugin.Name}' ({plugin.Version}) by {plugin.Author}");
+                    
+                    Plugins.Add(plugin);
+                }
+            }
+        }
+        
+        Logger.Info($"Loaded {Plugins.Count} plugins");
+    }
+
+    public async Task<ServerPageContext> BuildServerPage(ServerPageContext context)
+    {
+        foreach (var plugin in Plugins)
+        {
+            if (plugin.OnBuildServerPage != null)
+                await plugin.OnBuildServerPage.Invoke(context);
+        }
+
+        return context;
+    }
+    
+    public async Task<WebspacePageContext> BuildWebspacePage(WebspacePageContext context)
+    {
+        foreach (var plugin in Plugins)
+        {
+            if (plugin.OnBuildWebspacePage != null)
+                await plugin.OnBuildWebspacePage.Invoke(context);
+        }
+
+        return context;
+    }
+}