Cleanups: Move test plugin to Plugins subdirectory (#4463)

* Remove unused js-scroll-trigger classes

* Move test plugin to Plugins subdirectory

Plugins/BTCPayServer.Plugins.Test/TestPluginMigrationRunner.cs

@@ -0,0 +1,45 @@
+using System.Threading;
+using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Contracts;
+using BTCPayServer.Plugins.Test.Services;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Hosting;
+
+namespace BTCPayServer.Plugins.Test;
+
+public class TestPluginMigrationRunner:IHostedService
+{
+    public class TestPluginDataMigrationHistory
+    {
+        public bool UpdatedSomething { get; set; }
+    }
+    private readonly TestPluginDbContextFactory _testPluginDbContextFactory;
+    private readonly ISettingsRepository _settingsRepository;
+    private readonly TestPluginService _testPluginService;
+
+    public TestPluginMigrationRunner(TestPluginDbContextFactory testPluginDbContextFactory, ISettingsRepository settingsRepository, TestPluginService testPluginService)
+    {
+        _testPluginDbContextFactory = testPluginDbContextFactory;
+        _settingsRepository = settingsRepository;
+        _testPluginService = testPluginService;
+    }
+    public async Task StartAsync(CancellationToken cancellationToken)
+    {
+        var settings = await _settingsRepository.GetSettingAsync<TestPluginDataMigrationHistory>() ??
+                       new TestPluginDataMigrationHistory();
+        await using var ctx = _testPluginDbContextFactory.CreateContext();
+        await ctx.Database.MigrateAsync(cancellationToken: cancellationToken);
+        if (!settings.UpdatedSomething)
+        {
+            await _testPluginService.AddTestDataRecord();
+            settings.UpdatedSomething = true;
+            await _settingsRepository.UpdateSetting(settings);
+        }
+            
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken)
+    {
+        return Task.CompletedTask;
+    }
+}