realm: add error code enum
Per @apryakhin 's request, we will divide the PR !1109 (merged) into two PRs:
- adding the RealmStatus_t
- refactor the command line parser.
Then he can add the error code for his PR before the 1109 is merged.
Per @apryakhin 's request, we will divide the PR !1109 (merged) into two PRs:
Then he can add the error code for his PR before the 1109 is merged.