Install Option 2, missing requirements of PyQt

[KarlZeilhofer]

I tried to use on Linux Mint 20.1 to install tasmotizer, via pip3 and wheel.
It failed at runtime with this output

karl@Lenovo-P70:~$ tasmotizer.py
Traceback (most recent call last):
  File "/home/karl/.local/bin/tasmotizer.py", line 16, in <module>
    from PyQt5.QtSerialPort import QSerialPortInfo, QSerialPort
ModuleNotFoundError: No module named 'PyQt5.QtSerialPort'

After Git clone and installing requirements.txt, it runs successfully

[Jason2866]

added