feat(svg_icon): Add standard svg icons

-Adds icons to use with the svg_icon smarty helper in the is_themecore module. See is_themecore-PS9 repo.

- Uses chevron svg icons by default on bootstrap touchspin AND on main menu if it has children.

falcon/_dev/img/bag.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18.5" height="20.5" viewBox="0 0 18.5 20.5">
+  <g id="Icon_feather-shopping-bag" data-name="Icon feather-shopping-bag" transform="translate(-3.75 -2.25)">
+    <path id="Path_13" data-name="Path 13" d="M7.333,3,4.5,6.8V20.1A1.894,1.894,0,0,0,6.389,22H19.611A1.894,1.894,0,0,0,21.5,20.1V6.8L18.667,3ZM4.5,6.8h17" transform="translate(0 0)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"/>
+    <path id="Path_14" data-name="Path 14" d="M19.4,15A3.7,3.7,0,1,1,12,15" transform="translate(-2.7 -4.35)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"/>
+  </g>
+</svg>

falcon/_dev/img/chevron_down.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="10.828" height="6.414" viewBox="0 0 10.828 6.414">
+  <path id="Path_62" data-name="Path 62" d="M1560.845,813.75l4,4-4,4" transform="translate(823.164 -1559.431) rotate(90)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"/>
+</svg>

falcon/_dev/img/chevron_left.svg

@@ -0,0 +1,3 @@
+<svg width="6" height="10" viewBox="0 0 6 10" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M5 9L1 5L5 1" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

falcon/_dev/img/chevron_right.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="6.414" height="10.828" viewBox="0 0 6.414 10.828">
+  <path id="Path_94" data-name="Path 94" d="M1560.845,813.75l4,4-4,4" transform="translate(-1559.431 -812.336)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"></path>
+</svg>

falcon/_dev/img/chevron_up.svg

@@ -0,0 +1,3 @@
+<svg width="10" height="6" viewBox="0 0 10 6" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M1 5L5 1L9 5" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

falcon/_dev/img/heart.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="23.5" height="20.5" viewBox="0 0 23.5 20.5">
+  <path id="Icon_feather-heart" data-name="Icon feather-heart" d="M22.627,6.177a5.829,5.829,0,0,0-8.188,0l-1.116,1.1-1.116-1.1a5.831,5.831,0,0,0-8.188,0,5.693,5.693,0,0,0,0,8.108l1.116,1.1L13.323,23.5l8.188-8.108,1.116-1.1a5.692,5.692,0,0,0,0-8.108Z" transform="translate(-1.573 -3.747)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"/>
+</svg>

falcon/_dev/img/person.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="18.506" height="20.5" viewBox="0 0 18.506 20.5">
+  <g id="Icon_akar-person" data-name="Icon akar-person" transform="translate(-4.145 -2.25)">
+    <path id="Path_18" data-name="Path 18" d="M20.4,7.75a4.854,4.854,0,0,1-4.952,4.75A4.854,4.854,0,0,1,10.5,7.75,4.854,4.854,0,0,1,15.452,3,4.854,4.854,0,0,1,20.4,7.75Z" transform="translate(-2.054)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"/>
+    <path id="Path_19" data-name="Path 19" d="M18.264,21h.343a2.9,2.9,0,0,1,2.9,2.5l.381,2.968a1.87,1.87,0,0,1-.472,1.493,1.967,1.967,0,0,1-1.459.642H6.845a1.967,1.967,0,0,1-1.46-.643,1.87,1.87,0,0,1-.472-1.493l.38-2.968a2.9,2.9,0,0,1,2.9-2.5h.342" transform="translate(0 -6.6)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5"/>
+  </g>
+</svg>

falcon/_dev/img/search.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="17.867" height="17.867" viewBox="0 0 17.867 17.867">
+  <path id="Icon_akar-search" data-name="Icon akar-search" d="M18.453,18.453,14.8,14.8m2.022-4.885A6.913,6.913,0,1,1,9.913,3a6.913,6.913,0,0,1,6.913,6.913Z" transform="translate(-2 -2)" fill="none" stroke="currentColor" stroke-linecap="round" stroke-width="2"/>
+</svg>