add console.get(...) & add 'player' console variable

src/logic/scripting/lua/libs/libconsole.cpp

@@ -43,6 +43,11 @@ static int l_execute(lua::State* L) {
     }
 }
 
+static int l_get(lua::State* L) {
+    auto name = lua::require_string(L, 1);
+    return lua::pushvalue(L, (*engine->getCommandsInterpreter())[name]);
+}
+
 static int l_set(lua::State* L) {
     auto name = lua::require_string(L, 1);
     auto value = lua::tovalue(L, 2);
@@ -119,6 +124,7 @@ static int l_get_command_info(lua::State* L) {
 const luaL_Reg consolelib[] = {
     {"add_command", lua::wrap<l_add_command>},
     {"execute", lua::wrap<l_execute>},
+    {"get", lua::wrap<l_get>},
     {"set", lua::wrap<l_set>},
     {"get_commands_list", lua::wrap<l_get_commands_list>},
     {"get_command_info", lua::wrap<l_get_command_info>},