feat(icons): add lens-concave and lens-convex (#3831)

* feat(icons): add lens-convex icon

* feat(icon): add lens-concave icon

* fix(icon): replace approximate curve segments with 14-unit

* fix(icon): undo changes of making convex icon into concave

* fix(lens-concave): round path values from 13.9 to 14 to improve icon math

* Add 'shapes' category to lens-convex.json

* Add 'shapes' category to lens-concave.json

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/lens-concave.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "Muhammad-Aqib-Bashir",
+    "jamiemlaw",
+    "karsa-mistmere"
+  ],
+  "tags": [
+    "concave",
+    "lens",
+    "optics",
+    "light",
+    "magnification",
+    "curved",
+    "focus",
+    "refraction",
+    "science",
+    "physics",
+    "eyeglass",
+    "telescope",
+    "microscope"
+  ],
+  "categories": [
+    "science",
+    "tools",
+    "shapes"
+  ]
+}

icons/lens-concave.svg

@@ -0,0 +1,13 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M7 2a1 1 0 0 0-.8 1.6 14 14 0 0 1 0 16.8A1 1 0 0 0 7 22h10a1 1 0 0 0 .8-1.6 14 14 0 0 1 0-16.8A1 1 0 0 0 17 2z" />
+</svg>

icons/lens-convex.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "Muhammad-Aqib-Bashir",
+    "jamiemlaw",
+    "karsa-mistmere"
+  ],
+  "tags": [
+    "convex",
+    "lens",
+    "optics",
+    "magnification",
+    "focus",
+    "light",
+    "refraction",
+    "physics",
+    "eyeglass",
+    "telescope",
+    "microscope",
+    "curved",
+    "science"
+  ],
+  "categories": [
+    "science",
+    "tools",
+    "shapes"
+  ]
+}

icons/lens-convex.svg

@@ -0,0 +1,14 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path
+    d="M13.433 2a1 1 0 0 1 .824.448 18 18 0 0 1 0 19.104 1 1 0 0 1-.824.448h-2.866a1 1 0 0 1-.824-.448 18 18 0 0 1 0-19.104A1 1 0 0 1 10.567 2z" />
+</svg>