msggen: propagate added and deprecated fields

Whenever we want to add a new rpc command or notification in msggen's `util.py` we get an error during `make`
that the `added` field of that new command or notification is missing even when it's clearly not.
We had to uncomment 2 lines in `patch.py` and override any missing `added` annotation to get it running.
We now pass any `added` or `deprecated` fields from the parent object correctly so we no longer have to do this.

Unfortunately we have commited wrong metadata to `.msggen.json` in the past.
This commit also includes missing `added` annotation for commands added after the `pre-v0.10.1` cutoff and
manual fixes of the metadata in `.msggen.json`

Author: daywalker90