ci: add prettier to pre-commit

(cherry picked from commit 2c16036ef3)

.editorconfig

@@ -9,6 +9,13 @@ trim_trailing_whitespace = true
 charset = utf-8
 
 # python, js indentation settings
-[{*.py,*.js}]
+[{*.py,*.js,*.vue,*.css,*.scss,*.html}]
 indent_style = tab
 indent_size = 4
+max_line_length = 110
+
+# JSON files - mostly doctype schema files
+[{*.json}]
+insert_final_newline = false
+indent_style = space
+indent_size = 2