Use `Localize.flowlauncher_plugin_calculator_plugin_name()` instead

Use `Localize.flowlauncher_plugin_calculator_plugin_description()` instead

Use `Localize.flowlauncher_plugin_calculator_decimal_separator_use_system_locale()` instead

The variable 'e' is declared but never used

'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'ServicePointManager' is obsolete: 'WebRequest, HttpWebRequest, ServicePoint, and WebClient are obsolete. Use HttpClient instead. Settings on ServicePointManager no longer affect SslStream or HttpClient.' (https://aka.ms/dotnet-warnings/SYSLIB0014)

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

'Settings.ProgramSuffixes' is obsolete: 'Should use GetSuffixes() instead.'

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.