[GUI] Add "About" window & update titles

AssetStudioGUI/AboutForm.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Diagnostics;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Reflection.Emit;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace AssetStudioGUI
+{
+    public partial class AboutForm : Form
+    {
+        public AboutForm()
+        {
+            InitializeComponent();
+            var productName = Application.ProductName;
+            var arch = Environment.Is64BitProcess ? "x64" : "x32";
+            Text += " " + productName;
+            productTitleLabel.Text = productName;
+            productVersionLabel.Text = $"v{Application.ProductVersion} [{arch}]";
+            productNamelabel.Text = productName;
+            modVersionLabel.Text = Application.ProductVersion;
+
+            licenseRichTextBox.Text = GetLicenseText();
+        }
+
+        private string GetLicenseText()
+        {
+            string license = "MIT License";
+
+            if (File.Exists("LICENSE"))
+            {
+                string text = File.ReadAllText("LICENSE");
+                license = text.Replace("\r", "")
+                    .Replace("\n\n", "\r")
+                    .Replace("\nCopyright", "\tCopyright")
+                    .Replace("\n", " ")
+                    .Replace("\r", "\n\n")
+                    .Replace("\tCopyright", "\nCopyright");
+            }
+
+            return license;
+        }
+
+        private void checkUpdatesLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
+        {
+            var ps = new ProcessStartInfo("https://github.com/aelurum/AssetStudio/releases")
+            {
+                UseShellExecute = true
+            };
+            Process.Start(ps);
+        }
+
+        private void gitPerfareLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
+        {
+            var ps = new ProcessStartInfo("https://github.com/Perfare")
+            {
+                UseShellExecute = true
+            };
+            Process.Start(ps);
+        }
+
+        private void gitAelurumLinkLabel_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
+        {
+            var ps = new ProcessStartInfo("https://github.com/aelurum")
+            {
+                UseShellExecute = true
+            };
+            Process.Start(ps);
+        }
+    }
+}