Counter Strike Grenades

:sparkles: New Features

• 7d67263 - firegrenade: more realistic fire spread (commit by @yurinekoai)
• 05212cb - hegrenade: head damage boost (commit by @yurinekoai)

:bug: Bug Fixes

• dcea9e9 - firegrenade: fire generate on non-solid block (commit by @yurinekoai)
• e6477c8 - firegrenade: smoke generate on non-solid block (commit by @yurinekoai)
• 13c289d - firegrenade: fire spread will be blocked by blocks (commit by @yurinekoai)
• e0baf9f - firegrenade: fire will not generate under water (commit by @yurinekoai)
• 3bea443 - hegrenade: add head_damage_boost config entry (commit by @yurinekoai)

:recycle: Refactors

• 9bb685e - firegrenade: firegrenade will pop when hitting water surface from above (commit by @yurinekoai)
• eb9b901 - firegrenade: firegrenade will pop when hitting water surface from above (commit by @yurinekoai)