[$25] Add template repo to the Toolbox

[ajefts]

Describe the solution you'd like
Add a link to our code template repository in the Toolbox section of the challenge details page. This is mainly for dev challenges, but I think it would be ok to add for all challenges and tasks.

Repo link: https://github.com/topcoder-platform-templates

[ajefts]

@Oanh-and-only-Oanh Here is another quick win if you can add it to the list please?

[luizrrodrigues]

Challenge https://www.topcoder.com/challenges/52a6bb46-9c9d-446c-8456-d79960a85855 has been created for this ticket.

This is an automated message for luizrrodrigues via Topcoder X

[luizrrodrigues]

Challenge https://www.topcoder.com/challenges/52a6bb46-9c9d-446c-8456-d79960a85855 has been assigned to malfoys76.

This is an automated message for luizrrodrigues via Topcoder X