feat: schema.Any()

[zxch3n]

• Add schema.Any(options) to defer container decisions to Mirror at runtime
• Support per-Any inference overrides (defaultLoroText, defaultMovableList); Any defaults defaultLoroText=false to keep primitive
  strings
• Propagate Any inference settings down inferred container subtrees (registry tracks per-container defaults)
• Fix inference/diff/apply pipeline to consistently create containers for inferred values (incl. Text in lists) and to respect per-
  subtree defaults
• Improve MovableList behavior without schema:
  • diffMovableListByIndex now falls back to $cid as an implicit idSelector when all items have $cid, enabling complex move
    detection
  • Best-effort single-move detection remains for non-$cid items
• Consolidate InferContainerOptions as a single exported type (src/inferOptions.ts)
• Add/extend tests for Any inference, inferred MovableList moves, and fallback behavior; update docs to include Any usage/options