chore: add editorconfig (#16042)

roboshoes · jelbourn · commit 3a237bd254cd · 2019-05-17T17:53:47.000-07:00
diff --git a/.editorconfig b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.ts]
+indent_style = space
+indent_size = 2
