build: migrate formatting pipeline to oxfmt

internal/lint-configs/oxfmt-config/src/index.ts

@@ -0,0 +1,22 @@
+import { defineConfig as defineOxfmtConfig } from 'oxfmt';
+
+type OxfmtConfig = Parameters<typeof defineOxfmtConfig>[0];
+
+const oxfmtConfig = defineOxfmtConfig({
+  printWidth: 80,
+  proseWrap: 'never',
+  semi: true,
+  singleQuote: true,
+  sortPackageJson: false,
+  trailingComma: 'all',
+});
+
+function defineConfig(config: OxfmtConfig = {}) {
+  return defineOxfmtConfig({
+    ...oxfmtConfig,
+    ...config,
+  });
+}
+
+export { defineConfig, oxfmtConfig };
+export type { OxfmtConfig };