Code style: update `.editorconfig` file to match PSR-12

Details:
- split filetype sections to separate sections per file type
- update PHP section to match PSR-12 standard

.editorconfig

@@ -8,9 +8,21 @@ trim_trailing_whitespace = true
 indent_style = space
 indent_size = 2
 
-[*.{php,html,twig,yaml}]
-indent_style = space
-indent_size = 4
-
 [*.md]
 max_line_length = 80
+
+[*.html]
+indent_size = 4
+
+[*.php]
+# settings required by PSR-12 standard
+end_of_line = LF
+indent_style = space
+indent_size = 4
+max_line_length = 120
+
+[*.twig]
+indent_size = 4
+
+[*.yaml]
+indent_size = 4