* initial * refactor(Core/Unit): PC & NPC Immunities Cherry-pick TC:74af880217Co-authored-by: Treeston <treeston.nmoc@gmail.com> * fix builds error Cherry-pick TC:74af880217Co-authored-by: Treeston <treeston.nmoc@gmail.com> * Fix nef combat, and replace SetFlag by SetUnitFlag * fix combat with jedoga Co-authored-by: Treeston <treeston.nmoc@gmail.com>