chore: config files

.editorconfig

@@ -0,0 +1,17 @@
+# Default to Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 4
+
+[*.rs]
+indent_size = 2
+
+[*.js]
+indent_size = 2
+
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2

.rustfmt.toml

@@ -0,0 +1 @@
+hard_tabs = true