Allow props to be set dynamically through knobs on multiple components

[anishagg17]

Currently the knobs are applicable to the root component (Button) only , I propose to add knobs for the child component (input) also.

[tajo]

It gets a bit unclear what the UI would look like and how would you express the relationship between the Button and input. Note that the code snippet is auto generated based on props.

[anishagg17]

But we can add like child component and some other set of props for it, then it can be realistic.