`own` is consumed by the annotation parser, so it never appears as a
symbol and the editor showed it uncolored. Emit a keyword semantic token
for the name `own`; identifiers/keywords otherwise stay with the TextMate
grammar.
This also unblocks symbol colors after an `own` annotation once the
server is rebuilt (the old binary could not parse `own` at all and lost
every later symbol).
TermiNexus
c95290f913