update description & tags

Author: samizdatco

package.json

@@ -1,7 +1,7 @@
 {
   "name": "skia-canvas",
   "version": "0.9.31-rc5",
-  "description": "A canvas environment for Node",
+  "description": "A GPU-accelerated Canvas Graphics API for Node",
   "author": "Christian Swinehart <drafting@samizdat.co>",
   "license": "MIT",
   "repository": {
@@ -56,8 +56,9 @@
     ]
   },
   "keywords": [
-    "skia",
     "canvas",
+    "gpu",
+    "skia",
     "offscreen",
     "headless",
     "graphic",
@@ -66,6 +67,8 @@
     "images",
     "compositing",
     "render",
+    "vulkan",
+    "metal",
     "pdf",
     "svg",
     "rust"