web: add maskable icons back to manifest

src/front/manifest.webmanifest

@@ -18,6 +18,48 @@
             "sizes": "512x512",
             "type": "image/png",
             "purpose": "any"
+        },
+        {
+            "src": "/icons/maskable/48.png",
+            "sizes": "48x48",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/icons/maskable/72.png",
+            "sizes": "72x72",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/icons/maskable/96.png",
+            "sizes": "96x96",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/icons/maskable/128.png",
+            "sizes": "128x128",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/icons/maskable/192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/icons/maskable/384.png",
+            "sizes": "384x384",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "/icons/maskable/512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "maskable"
         }
     ],
     "share_target": {