perf(tiny-react): render optimization for "identical vnode" + fix memo

[hi-ogawa]

• merge base refactor(tiny-react): handle children re-insertion in fragment reconcilation #169

As expected, this would make memo implementation trivial (cf. #168).

With this perf update, we should revisit

• feat: add tiny-react js-framework-benchmark#1

todo

• before doing this, we should setup fuzzing based nested fragments reconcilation to make sure nothing breaks.
  • test(tiny-react): fuzzing reconciler #174