Create the type geomval if not exist

Related to https://github.com/CartoDB/cartodb-platform/issues/6237

server/extension/sql/05_postgis3_adapter.sql

@@ -0,0 +1,11 @@
+-- PG12_DEPRECATED
+-- Create geomval if it doesn't exist (in postgis 3+ it only exists in postgis_raster)
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'geomval') THEN
+        CREATE TYPE geomval AS (
+            geom geometry,
+            val double precision
+        );
+    END IF;
+END$$;