Improve weather/air error handling, messaging, and endpoint security

[vantough]

Motivation

• Ensure the OpenWeather air pollution call uses a secure HTTPS endpoint and make geocoding and pollution lookups more resilient to network/timeouts/bad payloads.
• Provide concise, actionable user-facing messages while preserving developer-visible logs for debugging.
• Fix visible typos and make response style consistent between the weather and air commands.
• Address a runtime bug where LOGS was used but not imported and update package version metadata.

Description

• Switched the air pollution endpoint to https://api.openweathermap.org/data/2.5/air_pollution and added a client timeout to the request in get_air_pollution_data.
• Reworked get_air_pollution_data to catch timeouts, aiohttp.ClientError, malformed JSON and missing fields, to log details via LOGS.exception(...) and return concise user-facing error messages (function now returns (data, error)).
• Added a get_geocode_data helper that calls geocode.xyz via async_searcher with defensive handling of timeouts, client errors, invalid JSON and missing keys, returning a structured dict or a short user error.
• Standardized no-input and failure messages between weather and air, fixed typos such as the Butler/Australia hint and the Nitrogen Monoxide label, and removed inconsistent backticks in user-facing text.
• Imported LOGS into plugins/weather.py to fix the missing-log bug and bumped pyUltroid/version.py to __version__ = "2026.04.05" and ultroid_version = "2.1.3".

Testing

• Ran python -m compileall plugins/weather.py pyUltroid/version.py and the files compiled successfully.
• Identified and fixed a runtime bug (missing LOGS import) during the changes, and verified the updated modules compile without syntax errors.