Add archive

[neoground]

Add month + year archive, including a calendar.

Show all data or specific sensor on overviews / calendar.

Each month / year page shows max / avg / min values per sensor + graphs. Performance is important.

The datasets can optionally be downloaded as CSV or JSON.

Datasets:

• Specific month (start of month - end of month)
• Specific year (start of year - end of year)
• Specific week (start of week - end of week)
• Specific day (?)
• Season (e.g. spring 2023 = 1st March - 31st May)
  • Custom seasons, like winter season of snow

Also show comparisons to previous datasets (so compare spring 2022 with spring 2021 or all springs, or july 2023 with july 2022).