Allow incoming signature requests from intents (#32)

* Add url scheme and linking

* Pass account to sign request page

* Provide functionality for accepting or rejecting requests

* Load account state before handling url

* Refactor code

* Make intent work when app is cleared from recents

* Fix bug to populate data from intents

* Fix bug to update data on subsequent requests

* Pass correct network to sign messages from cosmos account

* Fix bug to populate data for incoming intent

* Allow spaces in url

* Bad signature page

* Review changes

* Change page heading

* Use correct regex

* Clean up code

* Use https in url

* Set state properly

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Co-authored-by: Adw8 <adwait@deepstacksoft.com>

styles/stylesheet.js

@@ -101,11 +101,41 @@ const styles = StyleSheet.create({
     marginTop: 20,
     width: 200,
     alignSelf: 'center',
-    spinnerContainer: {
-      flex: 1,
-      justifyContent: 'center',
-      alignItems: 'center',
-    },
+  },
+  spinnerContainer: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
+  LoadingText: {
+    color: 'black',
+    fontSize: 18,
+    padding: 10,
+  },
+  requestMessage: {
+    borderWidth: 1,
+    borderRadius: 5,
+    marginTop: 50,
+    height: 50,
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  buttonContainer: {
+    marginTop: 50,
+    flexDirection: 'row',
+    marginLeft: 20,
+    justifyContent: 'space-evenly',
+  },
+  badRequestContainer: {
+    alignItems: 'center',
+    justifyContent: 'center',
+    padding: 20,
+  },
+  messageText: {
+    color: 'black',
+    fontSize: 16,
+    textAlign: 'center',
+    marginBottom: 20,
   },
 });