Fix menu/camera input conflict and move light position to Light menu

[Copilot]

Checklist

• I have added a changelog entry to CHANGELOG.md file on the branch/fork (if it is an internal change then it is not needed)
• Pull request meets the Coding Conventions standards: https://github.com/MontyTRC89/TombEngine/blob/master/CONTRIBUTING.md#coding-conventions

Links to issue(s) this pull request concerns (if applicable)

n/a

Description of pull request

Menu navigation and camera/player movement keys were processed simultaneously every freeze tick, causing inputs to fight (e.g. arrow keys triggering both menu selection and camera orbit).

Input separation

• Menu input and movement controls are now mutually exclusive based on UI visibility
• UI visible → menu navigation only
• UI hidden → camera/player movement only
• LOOK key toggles between modes (always available)
• INVENTORY exits Photo Mode (moved from HandleMenuInput to OnFreeze so it's always available)

Light position moved to Light menu

• Removed CTRL_LIGHT control mode from Camera menu (was confusing indirection)
• Added Place at Camera and Place at Lara buttons directly in Light menu
• Removed UpdateLightManualControls() — light positioning is now via menu buttons + the existing Source selector (Manual/Follow Camera/Follow Lara)

Other changes from prior commits

• Outfit/Weapon selectors added to Outfit menu (SwapSkinnedMesh/UnswapSkinnedMesh)
• UI only redraws on uiDirty flag (not every frame)
• Mouse scroll zoom, LOOK-held orbit boost for camera
• ClearAllKeys() at start of OnFreeze to prevent gameplay input leakthrough

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