environment sensor esp32

• simple web gui with graphs over 2 ore 24 hours
• led status (rgb led, 3 pieces WS2811 controlled)
• small api for requests (return json)
  • /api/v1/today : measure data for round about 24 hours ago
  • /api/v1/data?from=2024-06-06 : get data from 2024-06-06, if availible
  • /api/v1/interval: which interval are the mesure data
  • /api/v1/version: software version
  • /api/v1/info : idf/platformio version, count of cpu cores
  • /api/v1/current : acku voltage or chip voltagfe if no acku
  • /api/v1/fscheck : tesing purposes, trigger an filesystem chcek process
  • /api/v1/fsstat : amount of space in SPIFFS filesystem an measure files
  • /api/v1/set-timezone?timezone=CET-1 : set internal timezone (for GUI)
  • /api/v1/set-loglevel?level=7 : set controller loglevel, only app
• prometheus interface
  • /metrics

liglevels (numeric)

EMERGENCY = 0,
ALERT = 1,
CRITICAL = 2,
ERROR = 3,
WARNING = 4,
NOTICE = 5,
INFO = 6,
DEBUG = 7,