Standardized the format of some NPC parse error messages

- For better machine-parsing of such messages (i.e. in IDEs)

Signed-off-by: Haru <haru@dotalux.com>
Script syntax checker
[FIXUP TO BE REBASED] corrected context lines in the show error function
[TO BE SQUASHED] Minor tweaks
[FIXUP] Oops, missing console logo