Configuration
ESPHome configuration can be found in the esphome folder inside the repository.
Also minimal configuration for specific modules can be found in the respective module pages. For example, the microphone and the presence sensor have their own configuration snippets.
vekexasia-hmi.yaml
You can check the vekexasia-hmi.yaml file for a way to use the other modules yaml files.
Keep in mind that the vekexasia-hmi.yaml file is a way to combine all the modules into one yaml file. It is not a requirement to use it.
Also, this configuration might not work out of the box as it might be missing some other configuration elements that I regularly use.