[styles] Changed symbol for early entries to square

Signed-off-by: Yannik Bloscheck <git@yannikbloscheck.com>

data/styles/default/dark/symbols/square-m.svg

@@ -0,0 +1 @@
+<svg height="4" viewBox="0 0 4 4" width="4" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="a" d="m0 0h4v4h-4z"/></defs><g fill="none" fill-rule="evenodd" xlink:href="#a"><path d="m0 0h4v4h-4z" fill="#000"/><path d="m.67.67h2.67v2.67h-2.67z" fill="#747474"/></g></svg>

data/styles/default/include/Basemap_label.mapcss

@@ -709,7 +709,7 @@ node|z17[entrance],
 node|z18[amenity=loading_dock],
 node|z16[entrance=main],
 node|z16[emergency=emergency_ward_entrance],
-{icon-image: dot-m.svg;}
+{icon-image: square-m.svg;}
 
 node|z18-[entrance],
 node|z19-[amenity=loading_dock],

data/styles/default/light/symbols/square-m.svg

@@ -0,0 +1 @@
+<svg height="4" viewBox="0 0 4 4" width="4" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><defs><path id="a" d="m0 0h4v4h-4z"/></defs><g fill="none" fill-rule="evenodd" xlink:href="#a"><path d="m0 0h4v4h-4z" fill="#eed"/><path d="m.67.67h2.67v2.67h-2.67z" fill="#65655E"/></g></svg>