feat: allow customizing localization path of each locale (#7624)

packages/docusaurus-plugin-content-docs/src/__tests__/__fixtures__/site-with-custom-i18n-path/sidebars.json

@@ -0,0 +1 @@
+[{ "type": "autogenerated", "dirName": "." }]

packages/docusaurus-plugin-content-docs/src/__tests__/__snapshots__/cli.test.ts.snap

@@ -66,3 +66,12 @@ exports[`docsVersion second docs instance versioning 1`] = `
   ],
 }
 `;
+
+exports[`docsVersion works with custom i18n paths 1`] = `
+[
+  {
+    "dirName": ".",
+    "type": "autogenerated",
+  },
+]
+`;