Add UseGenericResources option for simpler generic type resource naming

[Copilot]

Generic types like AppIdentityUser<T> produce unwieldy resource filenames (e.g., AppIdentityUser1[[System.String, System.Private.CoreLib, ...]].fr.json`). This adds an option to strip generic markers for simpler naming.

Ref: http://hishambinateya.com/localization-and-generics

Changes

• JsonLocalizationOptions: Added UseGenericResources property (default true for backward compatibility)
• JsonStringLocalizerFactory: Added TryStripGenericTypeMarkers() that removes backtick and type arguments when UseGenericResources = false
• Applied stripping in both Create(Type) and Create(string, string) overloads

Usage

services.AddJsonLocalization(options =>
{
    options.ResourcesPath = "Resources";
    options.UseGenericResources = false; // GenericClass<T> → GenericClass.fr.json
});

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• web.archive.org
  • Triggering command: /usr/bin/curl curl -s REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Localization & Generics</issue_title>
<issue_description>Please refer to http://hishambinateya.com/localization-and-generics</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Localization & Generics #36

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