chore(format): Android project formatting (react-native-webview#433)

Added an extremely simple `.editorconfig` I inferred from the main part of the project, then reformatted the codebase according to it. 🙂

Author: sjchmiela

android/.editorconfig

@@ -0,0 +1,6 @@
+[*]
+charset=utf-8
+end_of_line=lf
+insert_final_newline=false
+indent_style=space
+indent_size=2

android/src/main/AndroidManifest.xml

@@ -1,13 +1,15 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.reactnativecommunity.webview">
-    <application>
-        <provider
-        android:name=".RNCWebViewFileProvider"
-        android:authorities="${applicationId}.fileprovider"
-        android:exported="false"
-        android:grantUriPermissions="true">
-            <meta-data
-                android:name="android.support.FILE_PROVIDER_PATHS"
-                android:resource="@xml/file_provider_paths" />
-        </provider>
-    </application>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.reactnativecommunity.webview">
+
+  <application>
+    <provider
+      android:name=".RNCWebViewFileProvider"
+      android:authorities="${applicationId}.fileprovider"
+      android:exported="false"
+      android:grantUriPermissions="true">
+      <meta-data
+        android:name="android.support.FILE_PROVIDER_PATHS"
+        android:resource="@xml/file_provider_paths" />
+    </provider>
+  </application>
 </manifest>

android/src/main/java/com/reactnativecommunity/webview/RNCWebViewFileProvider.java

@@ -4,7 +4,7 @@
 
 /**
  * Providing a custom {@code FileProvider} prevents manifest {@code <provider>} name collisions.
- *
+ * <p>
  * See https://developer.android.com/guide/topics/manifest/provider-element.html for details.
  */
 public class RNCWebViewFileProvider extends FileProvider {