v1.15 — PowerShell edition + repo restructure

- New powershell/InstaSoftOfficeTool.ps1: single-file WPF GUI version
  - Same Fluent Design UI, no compilation needed
  - Runs on any Windows 7+ with PowerShell 5.1 (built-in)
  - Chrome won't flag .ps1 files as "rarely downloaded"
  - Auto-elevates to admin
- Moved C# source to src/ subfolder
- Updated .gitignore for nested bin/obj folders

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Models/InstallConfig.cs

@@ -1,86 +0,0 @@
-using System.Collections.Generic;
-
-namespace InstaSoftOfficeTool.Models
-{
-    public class InstallConfig
-    {
-        public OfficeVersion Version { get; set; }
-        public OfficeEdition Edition { get; set; }
-        public string Architecture { get; set; } = "64";
-        public string Language { get; set; } = "hu-hu";
-        public string ProductKey { get; set; }
-        public List<string> ExcludedApps { get; set; } = new List<string>();
-
-        public string GetVersionDisplayName()
-        {
-            switch (Version)
-            {
-                case OfficeVersion.Office2024: return "Office 2024";
-                case OfficeVersion.Office2021: return "Office 2021";
-                case OfficeVersion.Office2019: return "Office 2019";
-                default: return "";
-            }
-        }
-
-        public string GetLanguageDisplayName()
-        {
-            return LanguageList.GetDisplayName(Language);
-        }
-    }
-
-    public static class LanguageList
-    {
-        public static readonly (string Code, string Name)[] Languages = new[]
-        {
-            ("hu-hu", "Magyar"),
-            ("en-us", "English (US)"),
-            ("de-de", "Deutsch"),
-            ("fr-fr", "Fran\u00e7ais"),
-            ("it-it", "Italiano"),
-            ("es-es", "Espa\u00f1ol"),
-            ("pt-pt", "Portugu\u00eas"),
-            ("nl-nl", "Nederlands"),
-            ("pl-pl", "Polski"),
-            ("cs-cz", "\u010ce\u0161tina"),
-            ("sk-sk", "Sloven\u010dina"),
-            ("ro-ro", "Rom\u00e2n\u0103"),
-            ("hr-hr", "Hrvatski"),
-            ("sl-si", "Sloven\u0161\u010dina"),
-            ("sr-latn-rs", "Srpski"),
-            ("bg-bg", "\u0411\u044a\u043b\u0433\u0430\u0440\u0441\u043a\u0438"),
-            ("uk-ua", "\u0423\u043a\u0440\u0430\u0457\u043d\u0441\u044c\u043a\u0430"),
-            ("ru-ru", "\u0420\u0443\u0441\u0441\u043a\u0438\u0439"),
-            ("tr-tr", "T\u00fcrk\u00e7e"),
-            ("ja-jp", "\u65e5\u672c\u8a9e"),
-            ("zh-cn", "\u4e2d\u6587 (\u7b80\u4f53)"),
-            ("ko-kr", "\ud55c\uad6d\uc5b4"),
-        };
-
-        public static string GetDisplayName(string code)
-        {
-            foreach (var lang in Languages)
-            {
-                if (lang.Code == code) return lang.Name;
-            }
-            return code;
-        }
-    }
-
-    public static class ExcludableApps
-    {
-        // Id, DisplayName, DefaultChecked (true = telep\u00edt, false = kiz\u00e1r)
-        // MinEdition: "all", "standard+" (Standard \u00e9s ProPlus), "proplus" (csak ProPlus)
-        public static readonly (string Id, string DisplayName, bool DefaultChecked, string MinEdition)[] Apps = new[]
-        {
-            ("Word", "Word", true, "all"),
-            ("Excel", "Excel", true, "all"),
-            ("PowerPoint", "PowerPoint", true, "all"),
-            ("Outlook", "Outlook", true, "all"),
-            ("OneNote", "OneNote", true, "all"),
-            ("Access", "Access", true, "proplus"),
-            ("Publisher", "Publisher", true, "standard+"),
-            ("Teams", "Teams", false, "all"),
-            ("Lync", "Skype for Business", false, "all"),
-        };
-    }
-}