fix: ensure duplicate components are written to unique files

[stufisher]

In our project we have components that are wrapped which means docgen detects components with the same name. This patch makes sure that each component is written to a unique file. Currently if two components have the same name then stringified props get concatenated together resulting in invalid json.

[atomicpages]

👋 Hey there, thanks for the contrib! The changes are a bit difficult to follow due to formatting changes. I'll pick the functional bits and merge them in. I'll LYK when it's published

[stufisher]

Urgh sorry, the pre-commit hook must have used a newer version of prettier, i can put the style changes back if you like? The functional changes are 109 - 131

[atomicpages]

Fixed in #23