Replace JSON.parse() with functionality of package stream-json

[xela1601]

Description

In #143 we did some research for finding alternatives to JSON.parse()within the Store.loadFromDisk() function.

In the scope of this issue we want to do the actual implementation part that is mentioned in #143

We will spawn a new issue for any implementation.

Relevant Job Stories

• Explore alternatives to JSON.parse #143

Estimated size (S, M, L)

I think this issue is S because, there are only very small changes that are involved. (Adding a new dependency and replacing one function call with another)