Showcase functionality

[SGA-A]

Is your feature request related to a problem? Please describe. You should be able to add a flex slot to your profile to 'flex' on other players. The functionality to add a showcase does not exist yet, though the field for it is present. This issue is linked with https://github.com/SGA-A/c2c/issues/14 but its development was postponed due to the size of the problem, along with many other features that will be published under issues.

Describe the solution you'd like

• Add a showcase item.
• Remove a showcase item.
• Implement logic to show showcase on user profile, if any.

Describe alternatives you've considered

• I have assumed that it is only possible to add one item to your showcase and that we will add a database field to represent your item in the showcase.
  • So under item_showcase we have Dynamic_Item for user with user ID 1047572530422108311.
• This may change if we choose to instead use a persistent shelve to store the user's showcase.
• Nevertheless, we may make it possible to add multiple items to your showcase using the same configurations (i.e. using the database).

This is something we are looking to implement in the most simplistic method possible without ruining the UX, but due to the scale of the problem, it will not be on our high priority list for the moment.

Additional context By implementing this, it provides you with the ability to change your flex slot. Showcase is designed to promote user engagement. It was added as a field in the profile command, but the logic and features were not fully implemented. At the moment, when viewing a user's profile, it will only post a message under the field stating that there is 'No showcase' under the given user.

[SGA-A]

This feature has recently been implemented in https://github.com/SGA-A/c2c/commit/d4e92f536d90c2353c750005f8be726dc40129d3.

See this commit for the same version but without type checks: https://github.com/SGA-A/c2c/commit/db378c9b0d3c6275c6ed73b9ae1c6f838ef7a46b