Feat: Powerups Model and Routes

[KreativeThinker]

• Add global Powerups model
• Add UsedPowerups model
• Add powerups config
• Add powerups initializer (admin route)
• Add global powerups route

The way powerups should be implemented is as follows:

• The powerups models is populated by calling the powerups initializer under the admin route with the values for points and number of uses per team.
• Once a powerup is used, it will be added to UsedPowerups with reference to the team, target, time of usage, duration.
• Individual powerups should be implemented as functions that can be called depending on user request.

Refer: https://github.com/lugvitc/pwncore/tree/powerups