feat: Add jekyll compatible prettier
HTML files weren't rendering properly after saving them, hence this feat. Added jekyll-prettier plugin.
Added eslint-config-prettier to make ESLint and Prettier play nice with each other. It turns off all ESLint rules that are unnecessary or might conflict with Prettier. Refer docs.
Changed tags in post.html since jekyll-prettier was throwing error.
Replaced <p> {{ content }} </p> with <div> {{ content }} </div>