It is possible that someone, good soul, creates an integration for the NEVE X Plick wifi thermostat. I saw that more than a few users are looking for it. Good Home assistant
You could try this search in your favorite search engine and get at least 6 that would probably work.
site:home-assistant.io thermostat
Otherwise this thread seems to answer a lot of questions as well.
Plikc integration.
If you still need a specific custom integration, a link to the product or a picture or more identifying info would help someone decide on helping or not.
Feature Request Guidelines 📔.