Create winners view

[cld-vasconcelos]

We need to create a new endpoint that returns the winners of each contest held. The response must contain the following data:

• Contest title
• Contest description
• When the contest ended
• The name of the winner of the contest
• The photo submission that won the context.

The response must be ordered by the date the contest ended.

[cld-vasconcelos]

OpenHands started fixing the issue! You can monitor the progress here.

[cld-vasconcelos]

A potential fix has been generated and a draft PR #87 has been created. Please review the changes.

[cld-vasconcelos]

@openhands-agent There seems to be an issue in the urls.py file, can you fix it?

[cld-vasconcelos]

OpenHands started fixing the issue! You can monitor the progress here.

[cld-vasconcelos]

A potential fix has been generated and a draft PR #88 has been created. Please review the changes.