Resolve API council comments

1. Rename isEnableBle to isBleEnabled
2. Make NearbyFrameworkInitializer a module-libraries SystemAPI

Bug: 216294721
Test: Compiled
Change-Id: If0fcd99d6e38b1586033c5d78eaa5943d255ef57
8 files changed
tree: 98dd7c83de7f7b5da6f0ab9eeebc66e46b81a301
  1. nearby/