Adding prawcore to the requirements

Multiple people on the discord ran into the issue that an error message would come up saying "ModuleNotFoundError: No module names 'prawcore'". I was told praw itself is supposed to install it but apparently it does not? I cannot verify if the people actually followed the steps correctly. Json told me to make a PR for it :) I took the value for the requirements.txt from here: https://pypi.org/project/prawcore/

requirements.txt

@@ -4,6 +4,7 @@ gTTS==2.2.4
 moviepy==1.0.3
 playwright==1.23.0
 praw==7.6.0
+prawcore >=1.5.1, <2
 pytube==12.1.0
 requests==2.28.1
 rich==12.5.1