conf/prettier/: experimental shared config

conf/prettier/package.json

@@ -0,0 +1,4 @@
+{
+  "main": "prettier.config.js",
+  "type": "module"
+}

conf/prettier/prettier.config.js

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+/** @format */
+
+// prettier.config.js, .prettierrc.js, prettier.config.mjs, or .prettierrc.mjs
+
+/**
+ * @see https://prettier.io/docs/en/configuration.html
+ * @type {import("prettier").Config}
+ */
+const config = {
+	bracketSameLine: true,
+	endOfLine: "auto",
+	insertPragma: true,
+	overrides: [
+		{
+			files: ".prettierrc",
+			options: {
+				parser: "json",
+			},
+		},
+	],
+	plugins: [
+		"@prettier/plugin-ruby",
+		"@prettier/plugin-xml",
+		"prettier-plugin-nginx",
+		"prettier-plugin-sh",
+		"prettier-plugin-toml",
+	],
+	proseWrap: "always",
+	quoteProps: "consistent",
+	requirePragma: false,
+	singleAttributePerLine: true,
+};
+
+export default config;