Plugins: trick events (trick_started, trick_landed, line_broken) and reskate.score.current

- With events.tricks a plugin hears the local skater's tricks: trick_started (where), trick_landed
  (points, multiplier, where it started and landed, how long it took) and line_broken (a slam or
  a wipeout); reskate.score.current() is the score HUD's line, multiplier and whether a trick is
  going on. Without the permission the events cannot be registered.
- The score HUD is read into the trick watch (Extension/Skater/score_hud.h, trick_watch.h) on the
  client tick only while a running plugin has events.tricks; a new level starts a new line.
  plugins::start takes the image base for it.
- reskate-test has a tricks module (skipped until a trick lands) and ptest trick, which waits 30 s
  for one and prints what its events said; reskate-hostile has trick-loop.

Not yet checked against real tricks in game.

Extension/Plugins/plugin_host.cpp

@@ -1,6 +1,7 @@
 #include "plugin_host.h"
 #include "plugin_api.h"
 #include "Engine/Core/Console/console_core.h"
+#include <algorithm>
 #include <format>
 #include <utility>
 
@@ -130,6 +131,19 @@ void Host::set_level(std::string level) {
     }
 }
 
+void Host::trick(const TrickNews& news) {
+    for (auto& [id, entry] : entries_) {
+        if (!entry.plugin || !entry.plugin->has("events.tricks")) continue;
+        entry.plugin->trick(news);
+        collect(entry);
+    }
+}
+
+bool Host::wants_tricks() const {
+    return std::any_of(entries_.begin(), entries_.end(),
+        [](const auto& item) { return item.second.plugin && item.second.plugin->has("events.tricks"); });
+}
+
 bool Host::run_console(std::string_view text) {
     if (commands_.empty()) return false;
     const auto parsed = parse_console_command(text);