chore: add .editorconfig

.editorconfig

@@ -0,0 +1,24 @@
+# https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+max_line_length = 80
+trim_trailing_whitespace = true
+
+[*.md]
+max_line_length = 0
+trim_trailing_whitespace = false
+
+[*.json]
+indent_size = 4
+
+[{package.json,package-lock.json}]
+indent_size = 2
+
+[COMMIT_EDITMSG]
+max_line_length = 0