Missing support for description_localizations in multiple methods when handling slash commands

[Tutitoos]

The description_localizations field, which allows providing localized descriptions for slash commands, is currently not supported in several methods of the Eris library. This causes issues when attempting to register or edit slash commands with localized descriptions, as the field is simply not passed to the API.

Affected Methods

The following methods are missing support for the description_localizations field:

• createCommand
• createGuildCommand
• editCommand
• editGuildCommand
• bulkEditCommands
• bulkEditGuildCommands

Proposed Solution

To fix this issue, the following code snippet needs to be added to each of the affected methods:

if (command.descriptionLocalizations !== undefined) {
    command.description_localizations = command.descriptionLocalizations;
}

This code ensures that the descriptionLocalizations property is properly mapped to the description_localizations field expected by the Discord API.

Impact

Adding this support will enable developers to register and edit slash commands with localized descriptions, improving the library's compliance with Discord's API and making it more useful for multilingual applications.