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/tower_lattice_lighting.svg

@@ -0,0 +1,3 @@
+<svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M6.47265 0L5.20116 10L2.5996 14H3.99999L4.66601 13H9.33398L9.99999 14H11.4004L8.85741 9.92383C9.00004 9.99929 7.55859 0 7.55859 0H6.47265ZM2.71484 1.54492C2.54757 1.62911 2.48547 1.9212 2.71484 2.01367L4.58984 2.76367C4.89626 2.88721 5.08316 2.41822 4.77734 2.29492L2.90234 1.54492C2.82588 1.5141 2.77059 1.51686 2.71484 1.54492ZM11 1.5957L9.12499 2.3457C8.81917 2.469 9.00606 2.938 9.31249 2.81445L11.1875 2.06445C11.4933 1.94116 11.3058 1.47241 11 1.5957ZM2.74609 3.32617C2.41634 3.32617 2.41634 3.82617 2.74609 3.82617H4.74609C5.07648 3.82617 5.07583 3.32617 4.74609 3.32617H2.74609ZM9.15624 3.37695C8.8265 3.37695 8.82585 3.87695 9.15624 3.87695H11.1562C11.486 3.87695 11.486 3.37695 11.1562 3.37695H9.15624ZM6.99999 4L7.74999 10H6.24999L6.99999 4ZM4.58984 4.45117L2.71484 5.20117C2.40901 5.32447 2.59591 5.79346 2.90234 5.66992L4.77734 4.91992C5.08316 4.79662 4.89566 4.32787 4.58984 4.45117ZM9.12499 4.50195C8.95773 4.58614 8.89562 4.87823 9.12499 4.9707L11 5.7207C11.3064 5.84425 11.4933 5.37525 11.1875 5.25195L9.31249 4.50195C9.23604 4.47113 9.18075 4.47389 9.12499 4.50195ZM5.99999 11H7.99999L8.66601 12H5.33398L5.99999 11Z" fill="#666666"/>
+</svg>