feature: hud (#37)

* build: replace FetchContent with direct includes for glm

* build(deps): replace SOIL2 with stb for image and vorbis decoding

* build: replace FetchContent with direct includes for toml++

* refactor(texture): bump block texture size to 512 and disable items tab

* feat: add hotbar system with ItemStack and RowLayout

* fix(ui): restrict Ctrl key handling to typing mode

* feat(ui): add widget border support and highlight selected hotbar slot

* fix(ui): update borders on scale change and correct Image width

- Added update_border() calls in set_scale() for Button, ChatBox, Image, Label, and TextField.
- Fixed Image::width() to multiply by width instead of height.
- Added early return in Widget::update_border() if border is not supported.

* feat(ui): add border visual feedback on slider drag

* feat(ui): add ItemSlot widget and refactor hotbar to use it

* feat(world_scene): add inventory UI and pause type enum

* feat(ui): add item slot tooltip and make window size static

* fix(ui label): account for background offset in width/height

* refactor(ui): centralize item info label in inventory and add update

* feat(ui): add hotbar interaction in inventory UI

* fix(inventory-ui): correct row creation logic for first item

The loop starting at index 0 created a new row on the first iteration
(i % 10 == 0). Shift the loop to start at 1 and adjust modulus condition
to create rows correctly every 10 items.

* feat(block): add name_key for localized block names

Add `name_key` field to all block TOML definitions, enabling per-block localization. Update `BlockData` struct and `BlockManager` with `local_name()` method that returns a localized string via the translation system. Add corresponding entries to `en_US.json` and `zh_CN.json`. Modify inventory UI to use the localized name when displaying block info, and fix a bug where emptying a hotbar slot did not clear the item locally.

* fix(ui): change inventory item slot color from white to gray

* fix(ui): add missing include for std::array

include/glm/gtc/random.hpp

@@ -0,0 +1,82 @@
+/// @ref gtc_random
+/// @file glm/gtc/random.hpp
+///
+/// @see core (dependence)
+/// @see gtx_random (extended)
+///
+/// @defgroup gtc_random GLM_GTC_random
+/// @ingroup gtc
+///
+/// Include <glm/gtc/random.hpp> to use the features of this extension.
+///
+/// Generate random number from various distribution methods.
+
+#pragma once
+
+// Dependency:
+#include "../ext/scalar_int_sized.hpp"
+#include "../ext/scalar_uint_sized.hpp"
+#include "../detail/qualifier.hpp"
+
+#if GLM_MESSAGES == GLM_ENABLE && !defined(GLM_EXT_INCLUDED)
+#	pragma message("GLM: GLM_GTC_random extension included")
+#endif
+
+namespace glm
+{
+	/// @addtogroup gtc_random
+	/// @{
+
+	/// Generate random numbers in the interval [Min, Max], according a linear distribution
+	///
+	/// @param Min Minimum value included in the sampling
+	/// @param Max Maximum value included in the sampling
+	/// @tparam genType Value type. Currently supported: float or double scalars.
+	/// @see gtc_random
+	template<typename genType>
+	GLM_FUNC_DECL genType linearRand(genType Min, genType Max);
+
+	/// Generate random numbers in the interval [Min, Max], according a linear distribution
+	///
+	/// @param Min Minimum value included in the sampling
+	/// @param Max Maximum value included in the sampling
+	/// @tparam T Value type. Currently supported: float or double.
+	///
+	/// @see gtc_random
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_DECL vec<L, T, Q> linearRand(vec<L, T, Q> const& Min, vec<L, T, Q> const& Max);
+
+	/// Generate random numbers in the interval [Min, Max], according a gaussian distribution
+	///
+	/// @see gtc_random
+	template<typename genType>
+	GLM_FUNC_DECL genType gaussRand(genType Mean, genType Deviation);
+
+	/// Generate a random 2D vector which coordinates are regularly distributed on a circle of a given radius
+	///
+	/// @see gtc_random
+	template<typename T>
+	GLM_FUNC_DECL vec<2, T, defaultp> circularRand(T Radius);
+
+	/// Generate a random 3D vector which coordinates are regularly distributed on a sphere of a given radius
+	///
+	/// @see gtc_random
+	template<typename T>
+	GLM_FUNC_DECL vec<3, T, defaultp> sphericalRand(T Radius);
+
+	/// Generate a random 2D vector which coordinates are regularly distributed within the area of a disk of a given radius
+	///
+	/// @see gtc_random
+	template<typename T>
+	GLM_FUNC_DECL vec<2, T, defaultp> diskRand(T Radius);
+
+	/// Generate a random 3D vector which coordinates are regularly distributed within the volume of a ball of a given radius
+	///
+	/// @see gtc_random
+	template<typename T>
+	GLM_FUNC_DECL vec<3, T, defaultp> ballRand(T Radius);
+
+	/// @}
+}//namespace glm
+
+#include "random.inl"