feat: build production-ready wtr weather PWA

public/icons/maskable.svg

@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <defs>
+    <linearGradient id="g" x1="40" y1="20" x2="480" y2="500" gradientUnits="userSpaceOnUse">
+      <stop stop-color="#38bdf8"/>
+      <stop offset=".55" stop-color="#2563eb"/>
+      <stop offset="1" stop-color="#312e81"/>
+    </linearGradient>
+  </defs>
+  <rect width="512" height="512" fill="url(#g)"/>
+  <circle cx="392" cy="124" r="90" fill="#fff" fill-opacity=".12"/>
+  <text x="62" y="318" fill="white" font-family="Arial, Helvetica, sans-serif" font-size="186" font-weight="700" letter-spacing="-28">wtr.</text>
+</svg>