Add PMTiles support (#938)

Add support for pmtiles sources. Solves #807 

<strike>
There is still an error, probably when adding the source to the Maputnik
sources:

```
Failed to process sources for 'pmtiles://https://example.com/data/switzerland.pmtiles' TypeError: NetworkError when attempting to fetch resource.
    fetchSources App.tsx:642
```

@bdon How did you solve this for https://editor.protomaps.com/ ?
</strike>

---------

Co-authored-by: Brandon Liu <bdon@bdon.org>
Co-authored-by: WebFreak001 <gh@webfreak.org>
Co-authored-by: ShellyDCMS <60476837+ShellyDCMS@users.noreply.github.com>
Co-authored-by: Harel M <harel.mazor@gmail.com>

src/locales/de/translation.json

@@ -149,6 +149,7 @@
   "Raster (Tile URLs)": "Raster (Tile URLs)",
   "Raster DEM (TileJSON URL)": "Raster DEM (TileJSON URL)",
   "Raster DEM (XYZ URLs)": "Raster DEM (XYZ URLs)",
+  "Vector (PMTiles)": "Vektor (PMTiles)",
   "Image": "Bild",
   "Video": "Video",
   "Add Source": "Quelle hinzufügen",
@@ -170,6 +171,7 @@
   "GeoJSON URL": "GeoJSON URL",
   "GeoJSON": "GeoJSON",
   "Cluster": "Cluster",
+  "PMTiles URL": "PMTiles URL",
   "Tile Size": "Kachelgröße",
   "Encoding": "Kodierung",
   "Error:": "Fehler:",