chore: setup prettier for code formatting and eslint (#605)

Author: congminh1254

.eslintignore

@@ -0,0 +1,3 @@
+test/fixtures/**
+package.json
+package-lock.json

.eslintrc.yml

@@ -1,6 +1,22 @@
-module.exports = {
+// prettier.config.js, .prettierrc.js, prettier.config.cjs, or .prettierrc.cjs
+
+/**
+ * @see https://prettier.io/docs/configuration
+ * @type {import("prettier").Config}
+ */
+const config = {
+	trailingComma: 'es5',
+	tabWidth: 4,
 	semi: true,
 	singleQuote: true,
-	bracketSpacing: true,
-	trailingComma: 'all',
+	overrides: [
+		{
+			files: '*.json',
+			options: {
+				useTabs: false,
+			},
+		},
+	],
 };
+
+module.exports = config;

.prettierignore

@@ -14,7 +14,7 @@ USAGE
   $ box autocomplete [SHELL] [-r]
 
 ARGUMENTS
-  SHELL  (zsh|bash|powershell) Shell type
+  [SHELL]  (zsh|bash|powershell) Shell type
 
 FLAGS
   -r, --refresh-cache  Refresh cache (ignores displaying instructions)
@@ -34,4 +34,4 @@ EXAMPLES
   $ box autocomplete --refresh-cache
 ```
 
-_See code: [@oclif/plugin-autocomplete](https://github.com/oclif/plugin-autocomplete/blob/v3.2.18/src/commands/autocomplete/index.js)_
+_See code: [@oclif/plugin-autocomplete](https://github.com/oclif/plugin-autocomplete/blob/v3.2.38/src/commands/autocomplete/index.js)_