Add editorconfig

.editorconfig

@@ -0,0 +1,10 @@
+root = true
+
+[*.{c,h}]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+trim_trailing_whitespace = true
+indent_style = tab
+indent_size = 8
+max_line_length = 80