feat: add topo50 tree points and topo50 coastline (#1056)

#### Motivation

Cache tree point and coast line layers

#### Modification

Adds NZ Tree points and topo50 coastline to list of layers cached.

#### Checklist

_If not applicable, provide explanation of why._

- [ ] Tests updated
- [ ] Docs updated
- [ ] Issue linked in Title

Author: blacha

src/config.ts

@@ -94,6 +94,7 @@ const Monitor = [
   { id: 50255, name: '50255-nz-cemetery-polygons-topo-150k' },
   { id: 50256, name: '50256-nz-chimney-points-topo-150k' },
   { id: 50257, name: '50257-nz-cliff-edges-topo-150k' },
+  { id: 50258, name: '50258-nz-coastlines-topo-150k' },
   { id: 50259, name: '50259-nz-cutting-edges-topo-150k' },
   { id: 50260, name: '50260-nz-dam-centrelines-topo-150k' },
   { id: 50263, name: '50263-nz-dredge-points-topo-150k' },
@@ -188,6 +189,7 @@ const Monitor = [
   { id: 50362, name: '50362-nz-telephone-centrelines-topo-150k' },
   { id: 50363, name: '50363-nz-tower-points-topo-150k' },
   { id: 50364, name: '50364-nz-track-centrelines-topo-150k' },
+  { id: 50365, name: '50365-nz-tree-points-topo-150k' },
   { id: 50366, name: '50366-nz-tunnel-centrelines-topo-150k' },
   { id: 50367, name: '50367-nz-vineyard-polygons-topo-150k' },
   { id: 50368, name: '50368-nz-walkwire-centrelines-topo-150k' },