Cookie Opt-In Pop-Up Banners & Consent Management Reccomendations

I’m looking to implement a pop-up banner with a checkbox for visitors to accept our collection of cookies. I’m assuming this requires an integration with an outside Consent Management Platform/tool – but don’t know where to start.

Any recommendations? Can’t seem to find any info on this via Contentful, but I know I can’t be the first trying to do this.