OSM OpenMapTiles style (#1420)

* OpenMapTiles style

* Rename style snippets from layer_name.json to defaultstyle.json

* Add README to icons dir.

* Add README to icons dir.

* Rename snippets to style.json

* Fix spritezero - move icons to svg subdir

* Move icons from style/icons/svg directly to style/icons

Co-authored-by: Tomas Pohanka <TomPohys@gmail.com>

style/icons/jewelry.svg

@@ -0,0 +1,10 @@
+<svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0)">
+<path d="M5.50018 -0.03125L4.0001 1.96875H10.0004L8.50033 -0.03125H5.50018V-0.03125ZM4.0001 2.96875L7.00025 5.71875L10.0004 2.96875H4.0001V2.96875ZM3.87509 5.09375C2.75946 6.02219 2 7.4229 2 8.96875C2 11.7169 4.33977 14 6.969 14C9.59823 14 11.938 11.7169 11.938 8.96875C11.938 7.43454 11.1958 6.05347 10.0942 5.125L8.9691 6.15625C9.88969 6.82909 10.5317 7.92025 10.5317 8.96875C10.5317 10.6802 8.79966 12.4375 6.969 12.4375C5.13834 12.4375 3.43757 10.6802 3.43757 8.96875C3.43757 7.91275 4.10028 6.82814 5.0314 6.15625L3.87509 5.09375V5.09375Z" fill="#AC39AC"/>
+</g>
+<defs>
+<clipPath id="clip0">
+<rect width="14" height="14" fill="white"/>
+</clipPath>
+</defs>
+</svg>