manager: migrate base project structure & deps

ModpackUpdater.Apps.Manager/Ui/UpdatesCollectorWindow.axaml.cs

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+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using ModpackUpdater.Apps.Manager.Api.Model;
+using ModpackUpdater.Manager;
+
+namespace ModpackUpdater.Apps.Manager.Ui;
+
+public partial class UpdatesCollectorWindow : Window
+{
+    public record ModUpdateInfo(KeyValuePair<string, string>[] AvailableVersions, InstallAction Origin)
+    {
+        public int NewVersion { get; set; } = 0;
+    }
+
+    public record ModUpdates(List<ModUpdateInfo> List);
+
+    private readonly IWorkspace workspace;
+    private readonly ModpackFactory factory = new();
+    private readonly InstallAction[] actions;
+
+    public ModUpdates? CurrentUpdates { get; private set; }
+    public ModUpdateInfo? SelectedUpdate => radListView_Updates.SelectedItem?.Value as ModUpdateInfo;
+    public int SelectedVersion => radListView_VersionTags.SelectedIndex;
+    
+    public UpdatesCollectorWindow(IWorkspace workspace, params InstallAction[] actions)
+    {
+        this.workspace = workspace;
+        this.actions = actions;
+
+        InitializeComponent();
+    }
+}