add icons to battery-upower

The icons are the same set used by the module *battery*.

themes/icons/ascii.json

@@ -93,6 +93,45 @@
       "prefix": "tun"
     }
   },
+  "battery-upower": {
+    "charged": {
+      "suffix": "full"
+    },
+    "charging": {
+      "suffix": "chr"
+    },
+    "AC": {
+      "suffix": "ac"
+    },
+    "discharging-10": {
+      "prefix": "!",
+      "suffix": "dis"
+    },
+    "discharging-25": {
+      "suffix": "dis"
+    },
+    "discharging-50": {
+      "suffix": "dis"
+    },
+    "discharging-80": {
+      "suffix": "dis"
+    },
+    "discharging-100": {
+      "suffix": "dis"
+    },
+    "unknown-25": {
+      "suffix": "?"
+    },
+    "unknown-50": {
+      "suffix": "?"
+    },
+    "unknown-80": {
+      "suffix": "?"
+    },
+    "unknown-100": {
+      "suffix": "?"
+    }
+  },
   "battery": {
     "charged": {
       "suffix": "full"