Refine createCache

[huozhi]

Fixes #1275

Changes

• Only need to setupOn<Event> for cache
• Setup global listeners inside createCache

createCache(new Map(), {
  // if you want to override any event that can trigger revalidation, use following options

  // override default behavior of revalidate on focus, it will revalidate on your own `focus` event now
  setupOnFocus(focusRevalidator) {
      customEvent.on('focus', focusRevalidator)
   },

   // override default behavior of revalidate on reconnect, it will revalidate on custom network events now
   setupOnReconnect(reconnectRevalidator) {
     customEvent.on('reconnect', reconnectRevalidator)
   }
})

Fixes

• Fix custom cache is not bound to env like focus, reconnect events on web

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[shuding]

I pushed a change due to one comment ☝️ , let me know what do you think!

[huozhi]

force pushed it but honored your changes @shuding
also add 2 test cases to cover the core changes