feat(google-maps): Adding a streetview component
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Descrizione
### Feature Description
Thanks for the awesome `google-maps` package! It abstracts away most of the gmaps logic that we heavily make use of in our apps.
But we're still missing one more functionality, namely an ng-like wrapper around the streetview panorama.
An ideal `map-streetview` component could go something like this:
```html
```
The (optional) `@Input() map` would be the map that [allows binding to external panoramas](https://github.com/googlemaps/js-types/blob/main/index.d.ts#L4210).
The (optional) `@Input overlays` would [support native gmaps overlays](https://developers.google.com/maps/documentation/javascript/streetview#StreetViewOverlays) but ideally also this package's [`map-marker`](https://github.com/angular/components/tree/main/src/google-maps/map-marker)s.
The `@Output`s would be consistent with the standard [streetview events](https://developers.google.com/maps/documentation/javascript/streetview#StreetViewEvents).
See section below for more details.
### Use Case
In order to mirror [`map-marker`](https://github.com/angular/components/tree/main/src/google-maps/map-marker)s onto the panorama:

we have to resort to the native JS API where we take advantage of the fact that `google.maps.Marker` instances get be bound to a `google.maps.StreetViewPanorama` [via `.setMap`](https://github.com/googlemaps/js-types/blob/346f9c9028e92a177cd6a76289e39d7407c99048/index.d.ts#L5138).
When the map markers are dragged, we can listen to the position changes and update the streetview markers' positions accordingly:
```typescript
// keep the map marker and its corresponding panorama marker in sync
google.maps.event.addListener(rawMarker, 'position_changed', () => {
panoramaMarker.setPosition(rawMarker.getPosition().toJSON());
});
```
But since we're using `map-markers` (and not the native `google.maps.Marker`s), we have to access the underlying native markers, pass them onto the native streetview and deal with "component" lifecycles manually.
Summing up, it'd be neat to have a `map-streetview` component.
If it were to support custom overlays such as native markers (or any of the components [in this package](https://github.com/angular/components/tree/main/src/google-maps) that implement `google.maps.OverlayView`), all the better!
Thoughts?
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Direzione di ricerca
Inizia con il package google-maps e il relativo componente src/google-maps/map-marker, quindi esamina le API collegate di Google Maps StreetViewPanorama e StreetViewEvents. Il lavoro è completato quando un componente map-streetview supporta gli input e gli output proposti e l’integrazione di overlay e marker è definita e coperta da test appropriati.
Scritto dal modello di indicizzazione a partire dal testo della issue.
Valutazione
- Stack tecnologico
- angular, typescript
- Ambito
- frontend
- Tipo di issue
- Funzionalità
- Difficoltà
- 5/5
- Tempo stimato
- Più di una settimana
- Stato di attività
- Ferma
- Chiarezza
- Abbastanza chiara
- Idoneità per principianti
- 35/100