Geomap: Add alpha day/night layer (#50201)

Co-authored-by: drew08t <drew08@gmail.com>

package.json

@@ -139,6 +139,7 @@
     "@types/logfmt": "^1.2.1",
     "@types/mousetrap": "1.6.9",
     "@types/node": "16.11.36",
+    "@types/ol-ext": "npm:@siedlerchr/types-ol-ext@2.0.0",
     "@types/papaparse": "5.3.2",
     "@types/pluralize": "^0.0.29",
     "@types/prismjs": "1.26.0",
@@ -337,6 +338,7 @@
     "mousetrap-global-bind": "1.1.0",
     "moveable": "0.30.0",
     "ol": "6.14.1",
+    "ol-ext": "^3.2.25",
     "papaparse": "5.3.2",
     "pluralize": "^8.0.0",
     "prismjs": "1.28.0",