[Tracking] Refactor TODOs

[yyx990803]

• further optimize setDOMProp on static tag + key
  #294
• #297
• Maximize code reuse between runtime/compiler-vapor and runtime/compiler-dom
  • move compiler-dom and runtime-dom to peer dep for compiler-vapor and runtime-vapor (see #295 (comment))
  • compiler-vapor should reuse htmlNesting logic from compiler-dom
    #298
  • vFor should reuse getSequence from core
  • createVaporApp should reuse logic from createApp in runtime-core
  • setStyle etc. reuse from runtime-dom
    • #295
• Treeshaking / bundle size optimizations
  • on/delegate is pulling in all the modifier code
    #300
  • createComponent -> setupComponent -> fallthroughAttrs -> setDynamicProps results pulling all the props handling code
    • we need to rethink how fallthrough attributes are handled, maybe by moving fallthrough attributes application code to be generated in the parent component where the child is consumed.
  • setup() returning object is only needed in __DEV__ (hmr)
    • #296
• simple component
• dynamic binding constant detection
• simplify renderEffect
  • only 1 effect per scope? (need bench)
  • binding inline caching
  • error if no instance
  • remove memo -- #288