update config files to match gutenberg repository

.browserslistrc

@@ -1,10 +1 @@
-> 1%
-ie >= 11
-last 1 Android versions
-last 1 ChromeAndroid versions
-last 2 Chrome versions
-last 2 Firefox versions
-last 2 Safari versions
-last 2 iOS versions
-last 2 Edge versions
-last 2 Opera versions
+extends @wordpress/browserslist-config

.editorconfig

@@ -14,9 +14,12 @@ trim_trailing_whitespace = true
 indent_style = tab
 indent_size = 4
 
-[*.yml]
+[*.{yml,yaml}]
 indent_style = space
 indent_size = 2
 
-[*.md]
-trim_trailing_whitespace = false
+[*.{gradle,java,kt}]
+indent_style = space
+
+[packages/react-native-*/**.xml]
+indent_style = space

.prettierrc.js

@@ -0,0 +1,3 @@
+// Import the default config file and expose it in the project root.
+// Useful for editor integrations.
+module.exports = require( '@wordpress/prettier-config' );