Feat: Hot Reload on Markdown changes

[comp615]

It would be nice if as someone is editing, or adding markdown files, the Next.JS server Hot reloaded. Currently, this does not work because the actual data files are statically generated inside bin/techradar.

However, it would be great if something like chokidar or watchman could be used to listen for *.md changes, and rerun npm run build:data. Doing this manually seems to cause the change to be picked up and the page to reload instantly!