Character Selection Menu v1.0

The character selection menu is an easy and mobile optimized solution to let the choose from a list of displayed characters.
It comes with the most important character attributes, like:
- current exp and needed exp for lvl up
- current and maximal level
- passive effects
- character skill
- description
- character class/Race e.g. Human or Alien
- Rank + Rank icons, from R1(weakest) to R4(strongest)

Features:
- Select character from scrollrect
- unlock and activate character
- switch between characters
- level up character
- easy creation of character, characterClass and Skills via ScriptableObjects