Add .editorconfig

.editorconfig

@@ -0,0 +1,29 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.rs]
+charset = utf-8
+indent_style = 2
+
+[*.toml]
+indent_style = space
+indent_size = 2
+
+[*.yml]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.sh]
+indent_style = space
+indent_size = 4
+
+[Makefile]
+indent_style = tab