add min/max_length support for string option and min/max_value for integer

[Birdie0]

Summary

Add missing supported arguments for string and integer option types

Added

• string - add support for min_length & max_length arguments
• integer - add support for min_value & max_value arguments
• number - add documentation for min_value & max_value arguments

Example code

BOT.register_application_command(:test, "test command") do |cmd|
  cmd.integer("integer", "integer option", required: false, min_value: -5, max_value: 5)
  cmd.number("number", "number option", required: false, min_value: -3.14, max_value: 3.14)
  cmd.string("string", "string option", required: false, min_length: 8, max_length: 32)
end

BOT.application_command(:test) do |event|
  integer = event.options["integer"]
  number = event.options["number"]
  string = event.options["string"]

  event.respond(ephemeral: true) do |msg|
    msg.add_embed do |embed|
      embed.description = <<~MSG
        integer: #{integer}
        number: #{number}
        string: #{string}
      MSG
    end
  end
end

[Droid00000]

Looks good to me.