backport: nodes flooder (analyzer) from cs-ebot

analyze: allow to disable goal marking
analyze: add cvars descriptions and bounds
nav: added optional post path smoothing for astar algorithm
nav: now bots will use Dijkstra algo instead of floyd-warshall if memory usage too high (controlled via yb_path_floyd_memory_limit cvar) (fixes #434)
nav: vistable are now calculated every frame to prevent game-freeze during loading the game (fixes #434)
graph: pracrice reworked to hash table so memory footprint is as low as possible (at cost 5-10% performance loss on practice) (fixes #434)
control: bots commands now is case-insensitive
bot: major refactoring of bot's code
nav: issue warnings about path fail only with debug
practice: check for visibility when updating danger index
analyzer: suspend any analyzing on change level
control: add kickall_ct/kickall_t
nav: increase blocked distance in stuck check

inc/vistable.h

@@ -0,0 +1,61 @@
+//
+// YaPB - Counter-Strike Bot based on PODBot by Markus Klinge.
+// Copyright © 2004-2023 YaPB Project <yapb@jeefo.net>.
+//
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+// limits for storing practice data
+CR_DECLARE_SCOPED_ENUM_TYPE (VisIndex, int32_t,
+   None = 0,
+   Stand = 1,
+   Crouch = 2,
+   Any = Stand | Crouch
+)
+
+// defines visibility count
+struct PathVis {
+   uint16_t stand, crouch;
+};
+
+class GraphVistable final : public Singleton <GraphVistable> {
+public:
+   using VisStorage = uint8_t;
+
+private:
+   SmallArray <VisStorage> m_vistable {};
+   bool m_rebuild {};
+   int m_length {};
+
+   int m_curIndex {};
+   int m_sliceIndex {};
+
+   float m_notifyMsgTimestamp {};
+
+public:
+   GraphVistable () = default;
+   ~GraphVistable () = default;
+
+public:
+   bool visible (int srcIndex, int destIndex, VisIndex vis = VisIndex::Any);
+
+   void load ();
+   void save ();
+   void rebuild ();
+
+public:
+
+   // triggers re-check for all the nodes
+   void startRebuild ();
+
+   // ready to use ?
+   bool isReady () const {
+      return !m_rebuild;
+   }
+};
+
+// explose global
+CR_EXPOSE_GLOBAL_SINGLETON (GraphVistable, vistab);
+