Implement /horoscope command

[tanamaroby]

Issue Title: Implement /horoscope Command

Issue Description: As a user of our Discord bot, I want to be able to use a "/horoscope" command to display daily, weekly, or monthly horoscope predictions for different zodiac signs, so that I can learn more about astrology within Discord.

Feature Description:

• The "/horoscope" command should take two arguments: the time frame (e.g., "daily", "weekly", "monthly") and the user's zodiac sign.
• When invoked with the time frame and zodiac sign arguments, the bot should fetch the horoscope prediction from a horoscope API.
• The bot's response should include the horoscope prediction for the specified time frame and zodiac sign.

Acceptance Criteria:

• The "/horoscope" command is successfully implemented and tested.
• Invoking the "/horoscope" command with valid time frame and zodiac sign arguments should result in the bot fetching and displaying the horoscope prediction.
• The bot's response should include the horoscope prediction for the specified time frame and zodiac sign.

Additional Notes:

• This feature will provide users with a fun and interesting way to learn about astrology and receive horoscope predictions within Discord.
• Please ensure thorough testing of the "/horoscope" command functionality before closing this issue.