Localized name for Shipping Method

Shipping Method now supports localized names. This enables displaying shipping methods in different languages.

Changes:

• [API] Added localizedName to ShippingMethod.
• [API] Added localizedName to ShippingMethodDraft.
• [API] Added Set Localized Name Update Action.
• [GraphQL API] Changed the ShippingMethodUpdateAction type:
  • Input field setLocalizedName was added to ShippingMethodUpdateAction type.
• [GraphQL API] Changed the ShippingMethod type:
  • Added the localizedNameAllLocales field to the ShippingMethod type.
  • Added the localizedName field to the ShippingMethod type.
• [GraphQL API] Changed the ShippingMethodDraft type:
  • Input field localizedName was added to ShippingMethodDraft type.
• [GraphQL API] Added the following type to the GraphQL schema: SetShippingMethodLocalizedName.

The following changes were made in terms of GraphQL SDL:

extend type ShippingMethod {
  localizedName(
    "String is defined for different locales. This argument specifies the desired locale."
    locale: Locale,

    "List of languages the client is able to understand, and which locale variant is preferred."
    acceptLanguage: [Locale!]): String
  localizedNameAllLocales: [LocalizedString!]
}

extend input ShippingMethodUpdateAction {
  setLocalizedName: SetShippingMethodLocalizedName
}

extend input ShippingMethodDraft {
  localizedName: [LocalizedStringItemInputType!]
}

input SetShippingMethodLocalizedName {
  localizedName: [LocalizedStringItemInputType!]
}