add cover conditions

[tchilov]

Description:

Related issue (if applicable):

Pull request in esphome with YAML changes (if applicable):

• esphome/esphome#12057

Checklist:

• [x] I am merging into next because this is new documentation that has a matching pull-request in esphome as linked above.
  or

• [ ] I am merging into current because this is a fix, change and/or adjustment in the current documentation and is not for a new component or feature.

• [ ] Link added in /components/index.rst when creating new documents for new components or cookbook.

New Component Images

If you are adding a new component to ESPHome, you can automatically generate a standardized black and white component name image for the documentation.

To generate a component image:

1. Comment on this pull request with the following command, replacing COMPONENT_NAME with your component name in UPPER_CASE format with underscores (e.g., BME280, SHT3X, DALLAS_TEMP):

   @esphomebot generate image COMPONENT_NAME
   

2. The ESPHome bot will respond with a downloadable ZIP file containing the SVG image.

3. Extract the SVG file and place it in the images/ folder of this repository.

4. Use the image in your component's index table entry in /components/index.rst.

Example: For a component called "DHT22 Temperature Sensor", use:

@esphomebot generate image DHT22

[netlify[bot]]

✅ Deploy Preview for esphome ready!

Name	Link
🔨 Latest commit	c38c4bd57bf2202590f12bf8eff10a1023f319d3
🔍 Latest deploy log	https://app.netlify.com/projects/esphome/deploys/6935cbfed612b30008b3ee80
😎 Deploy Preview	https://deploy-preview-5663--esphome.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[tchilov]

I would like to tidy up the headings of the rest of the docs page for actions/conditions/triggers. Can I do that in this PR as well or would you like me to open a new one?