add .editorconfig

Use editorconfig file to set standard line endings, widths, character set,
whitespace trimming, and file endings.

Signed-off-by: Mike Szczys <[email protected]>

Author: szczys

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+max_line_length = 80
+trim_trailing_whitespace = true