[Placement Group] Support named placement group java api & Refactor construct method

[clay4444]

Why are these changes needed?

This pr contains the following changes:

1. Refactor creation construct method of placement group and make it creation from a Option, the advantage of this is that if we want to add new features in the future, we no longer need to modify the constructor and jni interface, only need to modify the Option.
2. Implement the named placement group for java api

Related issue number

#13625

Checks

• 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 :(

[kfstorm]

@ffbin @chaokunyang Any more comments?