About dialog overhaul + new version string system

- Add brand-new About dialog

- Rename "SNAPSHOT" builds to "dev"

- Only show commit hash in version string if running a dev build, otherwise just show the program version, and beta/RC/etc. suffix if set

- Remove unused Strings.cs function

YAMDCC.Config/YAMDCC.Config.csproj

@@ -13,7 +13,7 @@
         <TargetFramework>net48</TargetFramework>
         <Title>YAMDCC config library</Title>
         <VersionPrefix>0.6.9.420</VersionPrefix>
-        <VersionSuffix>SNAPSHOT</VersionSuffix>
+        <VersionSuffix>dev</VersionSuffix>
     </PropertyGroup>
     <PropertyGroup Condition="'$(Configuration)'=='Release'">
         <DebugType>none</DebugType>

YAMDCC.ConfigEditor/Dialogs/VersionDialog.cs

@@ -0,0 +1,68 @@
+// This file is part of YAMDCC (Yet Another MSI Dragon Center Clone).
+// Copyright © Sparronator9999 2023-2024.
+//
+// YAMDCC is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// YAMDCC is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+// more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// YAMDCC. If not, see <https://www.gnu.org/licenses/>.
+
+using System;
+using System.Drawing;
+using System.Diagnostics;
+using System.Reflection;
+using System.Windows.Forms;
+
+namespace YAMDCC.ConfigEditor.Dialogs
+{
+    internal sealed partial class VersionDialog : Form
+    {
+        private static readonly string SourcePrefix = "https://github.com/Sparronator9999/YAMDCC";
+
+        public VersionDialog()
+        {
+            InitializeComponent();
+            lblDesc.Text = Strings.GetString("dlgAboutDesc");
+            lblCopyright.Text = Strings.GetString("dlgAboutCopyright");
+            lblVersion.Text += Utils.GetVerString();
+
+            string revision = Utils.GetRevision();
+
+            if (string.IsNullOrEmpty(revision))
+            {
+                lblRevision.Hide();
+            }
+            else
+            {
+                lblRevision.Text += revision;
+            }
+        }
+
+        private void btnLicense_Click(object sender, EventArgs e)
+        {
+            Process.Start("https://www.gnu.org/licenses/gpl-3.0.html#license-text");
+        }
+
+        private void btnSource_Click(object sender, EventArgs e)
+        {
+            Process.Start(SourcePrefix);
+        }
+
+        private void btnFAQ_Click(object sender, EventArgs e)
+        {
+            Process.Start($"{SourcePrefix}#faq");
+        }
+
+        private void btnIssues_Click(object sender, EventArgs e)
+        {
+            Process.Start($"{SourcePrefix}/issues");
+        }
+    }
+}