Document GPTree customization tasks for "administrators"

Post installation there are some tasks to get GPTree running as you want it. Main tasks for customization are:

configure voice -- voices https://cloud.google.com/text-to-speech/docs/voices?hl=de -- feature overview https://cloud.google.com/text-to-speech for features
voices config in local file personas.json, e.g. "tts_settings":{ "language_code": "de-DE", "name":"de-DE-Standard-E", "ssml_gender": "texttospeech.SsmlVoiceGender.MALE", "speaking_rate": 0.9, "pitch": -10 },
additional (pre-recorded) audio files in /audio/personas/ -- directory logic --- generated files in /audio/personas/ with a subdir e.g. quittenbaum for every persona -- file name logic / categories: --- greetings --- "idle" > later introduced, difference to wait?? --- wait --- bye --- files generated with category name and added number or like specified in as filename in personas.json, e.g. wait1.mp3, wait2.mp3 -- how to create them with /utils/audiofile-generator.py cd ~/gptree/ venv-gptree/bin/python3 utils/audiofile-generator.py

adjust "known" environment variable -- e.g. what kind of variables -- what aggregation state, e.g. mean of the last 7 days, last month, ... -- see utils/weather.py
match variables with sensors at final site / area

ClemensGruber / climart-gptree