Add EditorConfig file for consistent coding styles

Author: chriskacerguis

.editorconfig

@@ -0,0 +1,32 @@
+# EditorConfig is awesome: https://editorconfig.org
+# This file helps editors keep style consistent with PSR-12
+
+root = true
+
+# Base defaults for all files
+[*]
+end_of_line = lf
+charset = utf-8
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# PHP files — PSR-12
+[*.php]
+indent_style = space
+indent_size = 4
+# Keep tab width consistent for editors that display tabs
+tab_width = 4
+max_line_length = 120
+
+# JSON and YAML (commonly 2 spaces)
+[*.{json,yml,yaml}]
+indent_style = space
+indent_size = 2
+
+# Markdown — keep trailing spaces (used for hard line breaks)
+[*.md]
+trim_trailing_whitespace = false
+
+# Makefiles use hard tabs by convention
+[Makefile]
+indent_style = tab