[1/N][Advanced timeline] Include events/profiling events to the ray list tasks

[rkooo567]

Why are these changes needed?

This PR

1. changes scheduling_state -> state, which allows us to render state count from the frontend (it is also consistent with other schema).
2. Add duration to the frontend.
3. Add profile / regular events to the task state API.
4. Support source side filtering for job id

There are remaining work in the follow up

1. Replace timeline implementation to use task API
2. Implement timeline frontend.
3. Display events / profile events from the dashboard/state API in a better format.

Related issue number

Checks

• I've signed off every commit(by using the -s flag, i.e., git commit -s) in this PR.
• I've run scripts/format.sh to lint the changes in this PR.
• I've included any doc changes needed for https://docs.ray.io/en/master/.
• I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
• Testing Strategy
  • Unit tests
  • Release tests
  • This PR is not tested :(

[rickyyx]

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