Authentication in API

[bregySilvan]

Description

At the moment everyone can access our Rest-Api. For future purposes it's nice to have some sort of authentication. For a first pass we wanna add following funtionality:

• [x] add "/login" location on server side
• [x] modifiy login location to accept { name: string, password: string } parameters and return { success: boolean }
• [x] setup client for accessing "/login"
• [x] modify client to send payload { name: string, password: string }
• [x] modify server to check payload on "/login" request and return { success: boolean}