Add .editorconfig; reformat project

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+    "recommendations": [ "EditorConfig.EditorConfig" ]
+}

.vscode/settings.json

@@ -1 +0,0 @@
-{}