Added editorconfig

.editorconfig

@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: 2023 Davide Paro
+#
+# SPDX-License-Identifier: MIT
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+
+[*.{rst,md,yaml,yml,json}]
+indent_size = 2
+
+
+[Makefile]
+indent_style = tab