chore: add editorconfig

.editorconfig

@@ -0,0 +1,19 @@
+root = true
+
+[*]
+    charset = utf-8
+    insert_final_newline = true
+    end_of_line = lf
+    quote_type = double
+    indent_style = space
+    indent_size = 2
+    max_line_length = 120
+    curly_bracket_next_line = false
+    spaces_around_brackets = true
+    spaces_around_operators = true
+    indent_brace_style = K&R
+
+[*.tsx]
+    max_line_length = 100
+
+