Include .editorconfig file

This is an attempt to get more cross-editor compatibility.

.editorconfig

@@ -0,0 +1,19 @@
+# EditorConfig is awesome: https://EditorConfig.org
+root=true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+
+[*.go]
+indent_style = tab
+
+[*.py]
+indent_size = 4
+
+[Makefile]
+indent_style = tab

.vscode/settings.json

@@ -12,8 +12,6 @@
     "uncoveredGutterStyle": "blockred"
   },
   "[yaml]": {
-    "editor.insertSpaces": true,
-    "editor.tabSize": 2,
     "editor.autoIndent": "keep",
     "editor.defaultFormatter": "esbenp.prettier-vscode",
   },