set up editorconfig

Author: adamperkowski

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = false
+trim_trailing_whitespace = true
+
+[*.jule]
+indent_style = tab
+
+[*.{sh,bat,nix}]
+indent_size = 2