editorconfig: add go configiuration to reflect project style

Signed-off-by: yxxhero <aiopsclub@163.com>

.editorconfig

@@ -4,6 +4,14 @@ root = true
 insert_final_newline = true
 trim_trailing_whitespace = true
 
+[*.go]
+indent_style = tab
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
 [Makefile]
 indent_style = tab
-indent_size = 4
+indent_size = 4