mechanic: move word lists to data files

The word lists (monsters, spells, equipment, races, classes, titles and
so on) now live in pqcli/data/*.json instead of pqcli/config.py. A
GameData object loaded at startup is passed to the simulation and UIs.

Users can replace any list by putting NAME.json in
$XDG_CONFIG_HOME/pqcli/data/ or a directory given with --data-dir.
--dump-data DIR copies the built-in files out for editing. Malformed
files are reported and pqcli exits before starting the UI.

Combat task descriptions come from the new combat_verbs list, with
{target} standing for the enemy. The built-in list holds only "Executing
{target}", and a single verb consumes no random roll, so stock gameplay
is unchanged. Recorded traces in tests/fixtures pin this down.

Monster, Race and Class stay in pqcli.config so existing saves still
load.

Resolves #3

pqcli/ui/curses/views/game_view/__init__.py

@@ -3,6 +3,7 @@ import curses
 import datetime
 import typing as T
 
+from pqcli.game_data import GameData
 from pqcli.mechanic import Player, SignalMixin, Simulation
 from pqcli.roster import Roster
 from pqcli.ui.curses.event_handler import EventHandler
@@ -33,6 +34,7 @@ class GameView(BaseView):
         roster: Roster,
         player: Player,
         args: argparse.Namespace,
+        data: GameData,
     ) -> None:
         super().__init__(screen)
         self.on_exit = EventHandler()
@@ -41,7 +43,7 @@ class GameView(BaseView):
         self._player = player
         self._args = args
 
-        self._simulation = Simulation(player)
+        self._simulation = Simulation(player, data)
         self._last_tick = datetime.datetime.now()
 
     def keypress(self, key: int) -> None: