Add Validate button in the ESPhome Builder add on in Home Assistant

[jstoaks2112]

Describe the problem you have/What new integration you would like

Add a Validate button or link to the code editor screen in the esphome builder add on in homeassistant.
this would be next to the save and install buttons in the upper right hand corner of the editor.

Please describe your use case for this integration and alternatives you've tried:

this way you can validate the code without having to upload or download and without backing out of the editor.

Additional context