[docs] Restructure documentation, clarify some parts

docs/projects/esphome.md

@@ -0,0 +1,49 @@
+# ESPHome
+
+!!! note
+	Read [Getting started](../getting-started/README.md) first.
+
+Because ESPHome does not natively support running on non-ESP chips, you need to use a fork of the project.
+
+Assuming you have PlatformIO, git and Python installed:
+
+1. Open a terminal/cmd.exe, create `esphome` directory and `cd` into it.
+2. `git clone https://github.com/kuba2k2/libretuya-esphome -b platform/libretuya` (you need the `platform/libretuya` branch)
+3. Go to [Boards & CPU list](https://kuba2k2.github.io/libretuya/docs/supported/), click on your board and remember your board code.
+4. Create a YAML config file for your device. You can either:
+	- use `python -m esphome wizard yourdevice.yml` - type answers to the six questions the wizard asks
+	- if your board isn't available in the wizard yet, use the manual YAML method below
+	- write a config file manually:
+		```yaml
+		esphome:
+		  name: yourdevice
+
+		libretuya:
+		  board: wr3  # THIS IS YOUR BOARD CODE
+		  framework:
+		  	version: latest
+
+		logger:
+		api:
+		  password: ""
+		ota:
+		  password: ""
+
+		wifi:
+		  ssid: "YourWiFiSSID"
+		  password: "SecretPa$$w0rd"
+		  ap:
+		    ssid: "Yourdevice Fallback Hotspot"
+		    password: "Dv2hZMGZRUvy"
+		```
+5. Compile and upload ESPHome:
+	- `python -m esphome compile yourdevice.yml` - this will only compile the code
+	- `python -m esphome upload yourdevice.yml` - this will upload the previously compiled code
+	- `python -m esphome run yourdevice.yml` - this will compile and upload the code
+
+!!! info
+	If you want to flash manually:
+
+	The binary file, ready for uploading, will be in `.esphome/build/yourdevice/.pioenvs/yourdevice/`.
+
+	Refer to your board README to find appropriate flashing instructions.