Add geocoding and rework maps

Added support for OpenWeather's GeoCoding API, including a new model and the methods:

• CoordinatesByLocationName and CoordinatesByLocationNameAsync
• CoordinatesByZipCode and CoordinatesByZipCodeAsync
• LocationNameByCoordinates and LocationNameByCoordinatesAsync

Reworked WeatherMap class:

• Renamed class, from WeatherMap to Maps
• Added support for OpenStreetMap's Base Street Map (methods GetStreetMapUrl and DownloadStreetMap)
• Clarified parameter usage (tile coordinates vs. geographical coordinates)
• Added conversion from geographical to tile coordinates (function LatLongToTileCoordinates)

Fixed deadlock issue on synchronous calls to async methods.

Upgrade to .NET 8

Updated to the latest LTS .NET version, and upgraded to the newest Newtonsoft.Json version.

Rain and Snow Volume properties are now double

• Fixed a bug (#2) where rain volume properties were set to integers, even though the value could a decimal number, so changed all of the rain volume properties from int? to double?.
• Also changed all of the snow volume properties from int? to double?.

Added DateTime objects

• Changed the dates from unix seconds to DateTime objects, and the old dates are now moved to a separate property. Example: Models.WeatherModel.AnalysisDate is moved to Models.WeatherModel.AnalysisDateUnix and Models.WeatherModel.AnalysisDate now contains a DateTime object.
• Removed dates in unix seconds that accounted for timezones, instead of that, use the new DateTime objects with the timezone offset added. Ex: Models.WeatherModel.AnalysisDate.AddSeconds(Models.WeatherModel.Timezone).
• Added missing nullable properties like the wind gust, rain information and snow information.

Added DateTime objects (Beta)

• Changed the dates from unix seconds to DateTime objects, and the old dates are now moved to a separate property. Example: Models.WeatherModel.AnalysisDate is moved to Models.WeatherModel.AnalysisDateUnix and Models.WeatherModel.AnalysisDate now contains a DateTime object.
• Removed dates in unix seconds that accounted for timezones, instead of that, use the new DateTime objects with the timezone offset added. Ex: Models.WeatherModel.AnalysisDate.AddSeconds(Models.WeatherModel.Timezone).
• Added missing nullable properties like the wind gust, rain information and snow information.

Added One Call API support

From 1.2.0:
- Added support for the One Call API:
- OneCallApi contains extensions for WeatherClient that support calls to the API.
- Models.OneCallModel contains the model of the response of all One Call API calls.
- Enums.ExcludeOneCall contains parameters in the One Call response that can be excluded.
- RestApi now does not have synchronous methods.

From 1.3.0-rc.1:
- Fixed a bug where Measurement and Language wouldn't work in historical One Call API calls.

Added OneCall API support (Release Candidate 1)

Note: This version contains a breaking bug where Measurement and Language don't work in historical One Call API calls.

• Added support for the One Call API:
  • OneCallApi contains extensions for WeatherClient that support calls to the API.
  • Models.OneCallModel contains the model of the response of all One Call API calls.
  • Enums.ExcludeOneCall contains parameters in the One Call response that can be excluded.
  • RestApi now does not have synchronous methods.

Note that this version is a prerelease that may contain bugs, that you can report in the project's repository, since this version is a prerelease, the documentation may not be updated to this version.

Added Timezone Analysis dates and Sunset/Sunrise times.

Added new properties to Models.WeatherModel.WeatherModel:

• AnalysisDateTimezone: Gets the analysis date, accounting for the location's timezone.
• SunriseTimezone: Gets the sunrise time, accounting for the location's timezone.
• SunsetTimezone: Gets the sunset time, accounting for the location's timezone.

Added Air Pollution support.

New features!

• Now the Air Pollution API is supported with the AirPollution class.
• The responses are given in a new model, Models.PollutionModel.PollutionModel.
• Now the Get...() methods in WeatherClient are in a static class called RestApi, and they are all now internal, not public.
• WeatherModel.Cod is now WeatherModel.StatusCode.
• GlobalUsings.cs is a new file of only global usings, for clearer code.

ZIP Codes are now strings

• Now the ZIP Code needs to be a string instead of a long, to account for different ZIP formats in different countries.
• Now the Weather.NET logo looks normal.