Add test-tube/s icon/s and improve metadata for lab icons (#992)

* Improve metadata for `lab` icons

* Improve metadata for `lab` icons

* Add `test-tube` icon

* Add `test-tube` alternate icon

* Add `test-tubes` icon

* Refine `flask-round` icon

* Improve metadata

icons/beaker.json

@@ -1,7 +1,11 @@
 {
   "$schema": "../icon.schema.json",
   "tags": [
-    "cup"
+    "cup",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
   ],
   "categories": [
     "science",

icons/flask-conical-off.json

@@ -3,7 +3,11 @@
   "tags": [
     "beaker",
     "erlenmeyer",
-    "non toxic"
+    "non toxic",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
   ],
   "categories": [
     "science",

icons/flask-conical.json

@@ -2,7 +2,11 @@
   "$schema": "../icon.schema.json",
   "tags": [
     "beaker",
-    "erlenmeyer"
+    "erlenmeyer",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
   ],
   "categories": [
     "science",

icons/flask-round.json

@@ -1,7 +1,11 @@
 {
   "$schema": "../icon.schema.json",
   "tags": [
-    "beaker"
+    "beaker",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
   ],
   "categories": [
     "science",

icons/flask-round.svg

@@ -13,5 +13,5 @@
   <path d="M14 9.3V1.99" />
   <path d="M8.5 2h7" />
   <path d="M14 9.3a6.5 6.5 0 1 1-4 0" />
-  <path d="M5.58 16.5h12.85" />
+  <path d="M5.52 16h12.96" />
 </svg>

icons/pipette.json

@@ -2,10 +2,13 @@
   "$schema": "../icon.schema.json",
   "tags": [
     "eye dropper",
-    "color picker"
+    "color picker",
+    "lab",
+    "chemistry"
   ],
   "categories": [
     "text",
-    "design"
+    "design",
+    "science"
   ]
 }

icons/test-tube-2.json

@@ -0,0 +1,18 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "tube",
+    "vial",
+    "phial",
+    "flask",
+    "ampoule",
+    "ampule",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
+  ],
+  "categories": [
+    "science"
+  ]
+}

icons/test-tube-2.svg

@@ -0,0 +1,15 @@
+<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="M21 7 6.82 21.18a2.83 2.83 0 0 1-3.99-.01v0a2.83 2.83 0 0 1 0-4L17 3" />
+  <path d="m16 2 6 6" />
+  <path d="M12 16H4" />
+</svg>

icons/test-tube.json

@@ -0,0 +1,18 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "tube",
+    "vial",
+    "phial",
+    "flask",
+    "ampoule",
+    "ampule",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
+  ],
+  "categories": [
+    "science"
+  ]
+}

icons/test-tube.svg

@@ -0,0 +1,15 @@
+<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="M14.5 2v17.5c0 1.4-1.1 2.5-2.5 2.5h0c-1.4 0-2.5-1.1-2.5-2.5V2" />
+  <path d="M8.5 2h7" />
+  <path d="M14.5 16h-5" />
+</svg>

icons/test-tubes.json

@@ -0,0 +1,18 @@
+{
+  "$schema": "../icon.schema.json",
+  "tags": [
+    "tubes",
+    "vials",
+    "phials",
+    "flasks",
+    "ampoules",
+    "ampules",
+    "lab",
+    "chemistry",
+    "experiment",
+    "test"
+  ],
+  "categories": [
+    "science"
+  ]
+}

icons/test-tubes.svg

@@ -0,0 +1,18 @@
+<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="M9 2v17.5A2.5 2.5 0 0 1 6.5 22v0A2.5 2.5 0 0 1 4 19.5V2" />
+  <path d="M20 2v17.5a2.5 2.5 0 0 1-2.5 2.5v0a2.5 2.5 0 0 1-2.5-2.5V2" />
+  <path d="M3 2h7" />
+  <path d="M14 2h7" />
+  <path d="M9 16H4" />
+  <path d="M20 16h-5" />
+</svg>