Add Android asset links to support app intents (`/.well-known/assetli…

…nks.json`) (#1431)

Add Android asset links to support app intents (opening `app.element.io` will open the Android app when installed): `/.well-known/assetlinks.json`

Fix https://github.com/matrix-org/matrix-ansible-private/issues/5223
which unblocks element-hq/element-android#6225
to solve element-hq/element-android#5748

content/.well-known/assetlinks.json

@@ -0,0 +1,32 @@
+[
+  {
+    "relation": ["delegate_permission/common.handle_all_urls"],
+    "target": {
+      "namespace": "android_app",
+      "package_name": "im.vector.app.debug",
+      "sha256_cert_fingerprints": [
+        "B0:B0:51:DC:56:5C:81:2F:E1:7F:6F:3E:94:5B:4D:79:04:71:23:AB:0D:A6:12:86:76:9E:B2:94:91:97:13:0E"
+      ]
+    }
+  },
+  {
+    "relation": ["delegate_permission/common.handle_all_urls"],
+    "target": {
+      "namespace": "android_app",
+      "package_name": "im.vector.app.nightly",
+      "sha256_cert_fingerprints": [
+        "CA:D3:85:16:84:3A:05:CC:EB:00:AB:7B:D3:80:0F:01:BA:8F:E0:4B:38:86:F3:97:D8:F7:9A:1B:C4:54:E4:0F"
+      ]
+    }
+  },
+  {
+    "relation": ["delegate_permission/common.handle_all_urls"],
+    "target": {
+      "namespace": "android_app",
+      "package_name": "im.vector.app",
+      "sha256_cert_fingerprints": [
+        "F3:FF:38:D2:E5:A6:38:84:86:4A:4E:0D:45:C5:3B:19:8E:7E:39:C0:50:5B:D9:63:F5:55:D6:53:2D:EA:BF:5F"
+      ]
+    }
+  }
+]