Add .editorconfig for yml files

Signed-off-by: Odyssey <hi@odyssey346.dev>

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*.yml]
+end_of_line = lf
+insert_final_newline = false
+indent_style = tab
+indent_size = 2
+charset = utf-8