Create .editorconfig (#67)

Author: Mogyuchi

.editorconfig

@@ -0,0 +1,12 @@
+# https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 80

.vscode/extensions.json

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