Add weather forecast page

[rchlfryn]

Description

Adds weather forecast page using the forecast NAC widget.

Related Issues

Fixes #734

Key Changes

• Adds built in page /weather/forecast which loads the forecast widget and loads weather section using the capabilities API

Screenshots / Demo

SNFAC weather: true

NWAC weather: false

Future enhancements / Questions

Do we like this approach?

[github-actions]

Preview deployment: https://weather-forecast-page.preview.avy-fx.org

[busbyk]

Should we also add this page to the built-in pages list? https://github.com/NWACus/web/blob/main/docs/onboarding.md#L19

I didn't add the single observation and single avalanche pages there because they're dynamic so it doesn't really apply but this one does.

[busbyk]

⛏️ Do we want to use weather-forecast (singular) to match the title of the page? (= A wicked nitpick)

[rchlfryn]

forecasts was plural so I blindly followed it. I will update it since it mades sense as a singular forecast.

[rchlfryn]

Should we also add this page to the built-in pages list? https://github.com/NWACus/web/blob/main/docs/onboarding.md#L19

@busbyk I intentionally left this page out since not every Avy center has a weather forecast page. Thoughts?
These have weather: true

- AAIC
- BAC
- BTAC
- CAAC
- CBAC
- CNFAIC
- COAC
- ESAC
- FAC
- GNFAC
- HAC
- HPAC
- IPAC
- KPAC
- MSAC
- MWAC
- PAC
- SAC
- TAC
- VAC
- WAC
- WCMAC

[busbyk]

Should we also add this page to the built-in pages list? https://github.com/NWACus/web/blob/main/docs/onboarding.md#L19

@busbyk I intentionally left this page out since not every Avy center has a weather forecast page. Thoughts? These have weather: true

- AAIC
- BAC
- BTAC
- CAAC
- CBAC
- CNFAIC
- COAC
- ESAC
- FAC
- GNFAC
- HAC
- HPAC
- IPAC
- KPAC
- MSAC
- MWAC
- PAC
- SAC
- TAC
- VAC
- WAC
- WCMAC

Ah I hear ya. Maybe makes sense to include it in that list with a caveat that not every center should get it - that it should be based on the capabilities API. I just think that's the only place we have built-in pages documented so including all options there for when we have to create them manually seems helpful.

[rchlfryn]

@busbyk updated in 62a2ed7