Staking rewards calculator

[raedah]

User would input amount of DCR to start, a starting date, and an end date. It would tells the user how much they would have earned by staking that amount in tickets over the given time period. Code from the overview page can be reused. Most of the necessary logic is in the code that calculates the annual reward return rate.

[ademuanthony]

I am working on this

[ukane-philemon]

I can work on this.