Added a basic .editorconfig file to the project

.editorconfig

@@ -0,0 +1,10 @@
+# indicate this is the root of the project
+root = true
+
+[*.{kt,java,xml,gradle,md}]
+charset = utf-8
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = lf