Add editorconfig file

Author: devksingh4

.editorconfig

@@ -0,0 +1,20 @@
+# Editor configuration, see http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.ics]
+insert_final_newline = false
+
+[*.md]
+max_line_length = off
+trim_trailing_whitespace = false
+
+[{Makefile,**.mk}]
+# Use tabs for indentation (Makefiles require tabs)
+indent_style = tab