Software commands (not using pin3) to put PMS5003 to sleep to exponentially extend sensor life

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

The PMS5003 sensor has a 3.5yr life span according to the datasheet. It can be extended by either putting the sensor to sleep via a high level signal on pin 3 (Set) or by sending a sleep command via the UART. The command can be sent via the code pasted below however it is not officially supported, and thus braindead easy to do, and it gives a warning related to the response from the sensor being shorter than expected when the sleep mode is changed.

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

This code (see `uart.write` parts) adds the ability to put to sleep and awake the sensor:

```
interval:
- interval: 150s
# Two-minute interval to extend the life span of the PMS5003 sensor
then:
- switch.turn_on: pms_switch
- delay: 30s
- switch.turn_off: pms_switch

# Source: https://github.com/airgradienthq/arduino/blob/master/AirGradient.cpp#L123
switch:
- platform: template
name: "PMS5003"
id: pms_switch
optimistic: true
turn_on_action:
- uart.write:
id: pms5003_uart
data: [0x42, 0x4D, 0xE4, 0x00, 0x01, 0x01, 0x74]
turn_off_action:
- uart.write:
id: pms5003_uart
data: [0x42, 0x4D, 0xE4, 0x00, 0x00, 0x01, 0x73]
```

While it works fine, there is a warning:

```
[W][pmsx003:108]: PMSX003 length 4 doesn't match. Are you using the correct PMSX003 type?
```

The thread speculates that it is simply due to ESPHome expecting more data than is sent for this command given it only supports receiving measurement data.

Source of code above: https://forum.airgradient.com/t/extending-the-life-span-of-the-pms5003-sensor/114/9

This post gives more insight on what data is sent back:

https://forum.airgradient.com/t/extending-the-life-span-of-the-pms5003-sensor/114/13

**Additional context**

The thread where I found the information in this FR is:

https://forum.airgradient.com/t/extending-the-life-span-of-the-pms5003-sensor/114

I claim absolutely no credits! I am only relaying this in hopes that someone will merge this into ESPHome for official support.