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/gtx/common.inl

@@ -0,0 +1,125 @@
+/// @ref gtx_common
+
+#include <cmath>
+#include "../gtc/epsilon.hpp"
+#include "../gtc/constants.hpp"
+
+namespace glm{
+namespace detail
+{
+	template<length_t L, typename T, qualifier Q, bool isFloat = true>
+	struct compute_fmod
+	{
+		GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& a, vec<L, T, Q> const& b)
+		{
+			return detail::functor2<vec, L, T, Q>::call(TFmod<T>(), a, b);
+		}
+	};
+
+	template<length_t L, typename T, qualifier Q>
+	struct compute_fmod<L, T, Q, false>
+	{
+		GLM_FUNC_QUALIFIER static vec<L, T, Q> call(vec<L, T, Q> const& a, vec<L, T, Q> const& b)
+		{
+			return a % b;
+		}
+	};
+}//namespace detail
+
+	template<typename T>
+	GLM_FUNC_QUALIFIER bool isdenormal(T const& x)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_FLOAT, "'isdenormal' only accept floating-point inputs");
+
+#		if GLM_HAS_CXX11_STL
+			return std::fpclassify(x) == FP_SUBNORMAL;
+#		else
+			return epsilonNotEqual(x, static_cast<T>(0), epsilon<T>()) && std::fabs(x) < std::numeric_limits<T>::min();
+#		endif
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER typename vec<1, T, Q>::bool_type isdenormal
+	(
+		vec<1, T, Q> const& x
+	)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_FLOAT, "'isdenormal' only accept floating-point inputs");
+
+		return typename vec<1, T, Q>::bool_type(
+			isdenormal(x.x));
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER typename vec<2, T, Q>::bool_type isdenormal
+	(
+		vec<2, T, Q> const& x
+	)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_FLOAT, "'isdenormal' only accept floating-point inputs");
+
+		return typename vec<2, T, Q>::bool_type(
+			isdenormal(x.x),
+			isdenormal(x.y));
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER typename vec<3, T, Q>::bool_type isdenormal
+	(
+		vec<3, T, Q> const& x
+	)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_FLOAT, "'isdenormal' only accept floating-point inputs");
+
+		return typename vec<3, T, Q>::bool_type(
+			isdenormal(x.x),
+			isdenormal(x.y),
+			isdenormal(x.z));
+	}
+
+	template<typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER typename vec<4, T, Q>::bool_type isdenormal
+	(
+		vec<4, T, Q> const& x
+	)
+	{
+		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || GLM_CONFIG_UNRESTRICTED_FLOAT, "'isdenormal' only accept floating-point inputs");
+
+		return typename vec<4, T, Q>::bool_type(
+			isdenormal(x.x),
+			isdenormal(x.y),
+			isdenormal(x.z),
+			isdenormal(x.w));
+	}
+
+	// fmod
+	template<typename genType>
+	GLM_FUNC_QUALIFIER genType fmod(genType x, genType y)
+	{
+		return fmod(vec<1, genType>(x), y).x;
+	}
+
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER vec<L, T, Q> fmod(vec<L, T, Q> const& x, T y)
+	{
+		return detail::compute_fmod<L, T, Q, std::numeric_limits<T>::is_iec559>::call(x, vec<L, T, Q>(y));
+	}
+
+	template<length_t L, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER vec<L, T, Q> fmod(vec<L, T, Q> const& x, vec<L, T, Q> const& y)
+	{
+		return detail::compute_fmod<L, T, Q, std::numeric_limits<T>::is_iec559>::call(x, y);
+	}
+
+	template <length_t L, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER vec<L, bool, Q> openBounded(vec<L, T, Q> const& Value, vec<L, T, Q> const& Min, vec<L, T, Q> const& Max)
+	{
+		return greaterThan(Value, Min) && lessThan(Value, Max);
+	}
+
+	template <length_t L, typename T, qualifier Q>
+	GLM_FUNC_QUALIFIER vec<L, bool, Q> closeBounded(vec<L, T, Q> const& Value, vec<L, T, Q> const& Min, vec<L, T, Q> const& Max)
+	{
+		return greaterThanEqual(Value, Min) && lessThanEqual(Value, Max);
+	}
+}//namespace glm