Refactor ContractTransaction.tsx component

[marcinbodnar]

1. Splitting the components into separate files

• it makes it much easier to work on - it’s easier to make changes, find bugs, add features when all code related to the component is separated
• what’s more important, it’s much easier to take a closer look at the component and decide which part of the UI should be in a separate component because of the logic - that has an impact on the efficiency.

2. create smaller components with encapsulated logic

• it’s much more efficient because we can decide which component should rerender in what situation vs rendering a big component in every situation
• we can optimize the props flow - which also improves app efficiency
• it’s also much easier to work on a small component