feat(api): export `BaseDirectory` in `path` module (#1885)

.changes/api-export-BaseDirectory.md

@@ -0,0 +1,6 @@
+---
+"api": patch
+---
+
+Export `BaseDirectory` in `path` module
+

tooling/api/src/path.ts

@@ -469,5 +469,6 @@ export {
   templateDir,
   videoDir,
   currentDir,
-  resolvePath
+  resolvePath,
+  BaseDirectory
 }