[frontend] Generate web token at runtime (#3462)

Rather than having that hardcoded one like before. Also adds
infrastructure which should make it easier to setup defaults at runtime
(e.g. GPU stuff?)

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3462
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: Lizzie <lizzie@eden-emu.dev>

src/common/settings.h

@@ -786,7 +786,7 @@ struct Values {
                                      Category::WebService};
     Setting<std::string> eden_username{linkage, "Eden", "eden_username",
                                        Category::WebService};
-    Setting<std::string> eden_token{linkage, "njausoolxygtpvraofqunuufhmupriifnpfggjxefntlyglr",
+    Setting<std::string> eden_token{linkage, "",
                                     "eden_token", Category::WebService};
 
     // Add-Ons