chore: configure Prettier and EditorConfig for consistent formatting

.editorconfig

@@ -0,0 +1,35 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+root = true
+
+[*]
+# Set the max line length to 80 characters
+max_line_length = 80
+
+# Use 2 spaces for indentation
+indent_style = space
+indent_size = 2
+
+# End files with a newline
+insert_final_newline = true
+
+# Don't use tabs for indentation
+tab_width = 2
+
+# Use double quotes
+quote_type = double
+
+# Don't add trailing commas
+trim_trailing_whitespace = true
+
+# Keep spaces between brackets
+space_inside_brackets = true
+
+# Avoid parentheses for single-argument arrow functions
+arrow_function_parentheses = avoid
+
+# Don't wrap prose
+wrap_prose = never
+
+# Add semicolons at the end of statements
+end_of_line = lf

.prettierrc

@@ -0,0 +1,11 @@
+{
+  "printWidth": 80,
+  "tabWidth": 2,
+  "useTabs": false,
+  "singleQuote": false,
+  "trailingComma": "none",
+  "bracketSpacing": true,
+  "arrowParens": "avoid",
+  "proseWrap": "never",
+  "semi": true
+}