Add SpellFieldKey class for managing spell and aura keys

- Introduced a new class `SpellFieldKey` to encapsulate constants and methods related to spell and aura identifiers.
- Added methods for generating keys for spells and auras, including parsing functionality for spell and aura strings.
- Implemented utility methods for stripping prefixes and canonicalizing aura IDs.

UI/MainForm.cs

@@ -1532,7 +1532,6 @@ public sealed class MainForm : Form, IMessageFilter
         {
             try
             {
-                module.Version = AppInfo.Version;
                 var warning = _moduleDependencyService.Capture(module);
                 _moduleStore.SaveDependenciesInPlace(module);
                 savedCount++;