[R-Model, R-Debug] Revise CombinedRElement

  - Add type to model children methods
  - Correct names
  - Move/extract list interface (CombinedRList) to package r.core.data
  - Rename/extract envir interface (RProcessREnvironment)
  - Add use of nullable annotations
65 files changed
tree: 70a39629d748ca443ee0924ff1dc9d4ff7c978ce
  1. .settings/
  2. r/
  3. redocs/
  4. rtm/
  5. .project