Add SparkGameOpenWorld: fully fledged open world game template

[Krilliac]

New game module with 8 subsystems showcasing SparkEngine's open-world capabilities:

• World: 8 biome regions (grasslands, forest, mountains, desert, tundra, swamp, coast, volcanic) with seamless streaming and origin rebasing
• Player: survival mechanics (health, stamina, hunger, thirst, temperature), fast travel, compass
• Exploration: 28 points of interest across all biomes, discovery/fog system, viewpoints, secrets, XP rewards
• Wildlife: 12 animal species with herd behavior, predator-prey ecology, and horse/deer taming
• Settlements: 8 NPC settlements with 30+ named NPCs (merchants, guards, elders), plus player camp building with 5 upgrade tiers
• Gathering: 30 resource nodes across 8 biomes, 20 crafting recipes in 6 categories (tools, weapons, armor, consumables, building, alchemy)
• Events: 8 dynamic world event types (bandit raids, stampedes, caravans, storms, dragon sightings) with cooldowns and participation tracking
• Engine: full integration with save, AI (5 behavior trees), cinematic (2 sequences), weather, time-of-day, music (9 tracks), and event bus

30+ console commands for testing all systems. Builds clean, all tests pass.

https://claude.ai/code/session_0112wbRLE6xVGPtYvBPi5LXq

[github-actions]

Code Coverage (GCC + lcov)

Utils/Logger.cpp                          |21.8%    133| 0.0%    17|    -      0
Utils/Logger.h                            |18.2%    121| 0.0%    20|    -      0
Utils/MathUtils.cpp                       |    -      0|    -     0|    -      0
Utils/MemoryDebugger.h                    |13.3%    150| 0.0%    20|    -      0
Utils/MemoryMonitor.cpp                   | 9.6%    229| 0.0%    19|    -      0
Utils/MemoryMonitor.h                     |85.7%     14| 0.0%    12|    -      0
Utils/NetworkHealthMonitor.cpp            | 113%     15| 0.0%     2|    -      0
Utils/NetworkHealthMonitor.h              |    -      0|    -     0|    -      0
Utils/OpaqueHandle.h                      | 209%     11| 0.0%    15|    -      0
Utils/Profiler.cpp                        |14.2%    113| 0.0%    15|    -      0
Utils/Profiler.h                          |36.4%     33| 0.0%    12|    -      0
Utils/RandomEngine.h                      |29.3%     41| 0.0%    12|    -      0
Utils/Result.h                            | 100%     29| 0.0%    28|    -      0
Utils/RingBuffer.h                        | 108%     59| 0.0%    64|    -      0
Utils/ScopeGuard.h                        | 142%     36| 0.0%    51|    -      0
Utils/ScopedTimer.h                       |25.0%     12| 0.0%     3|    -      0
Utils/Serializer.h                        | 100%     48| 0.0%    42|    -      0
Utils/SparkConsole.cpp                    | 125%     32| 0.0%     6|    -      0
Utils/SparkConsole.h                      | 100%      2| 0.0%     2|    -      0
Utils/SparkError.h                        |10.9%     55| 0.0%     6|    -      0
Utils/SplinePath.h                        |    -      0|    -     0|    -      0
Utils/StackTrace.h                        |11.0%     73| 0.0%     8|    -      0
Utils/StateMachine.h                      |54.0%     63| 0.0%    32|    -      0
Utils/StringUtils.h                       |18.8%    112| 0.0%    21|    -      0
Utils/ThreadDebugger.h                    |12.8%    148| 0.0%    19|    -      0
Utils/ThreadSafeQueue.h                   |27.5%     40| 0.0%    11|    -      0
Utils/UUID.h                              |43.2%     37| 0.0%    16|    -      0
Utils/Validate.h                          |    -      0|    -     0|    -      0

[/home/runner/work/SparkEngine/SparkEngine/SparkSDK/Include/Spark/]
IEngineContext.h                          |6700%      1| 0.0%     1|    -      0
Version.h                                 |    -      0|    -     0|    -      0
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                                    Total:|35.4%  12110| 0.0%  2439|    -      0