build: Refactor ImHexAPI into multiple separate files

lib/libimhex/source/helpers/scaling.cpp

@@ -0,0 +1,23 @@
+#include <hex/helpers/scaling.hpp>
+
+#include <hex/api/imhex_api/system.hpp>
+
+namespace hex {
+
+    float operator""_scaled(long double value) {
+        return value * ImHexApi::System::getGlobalScale();
+    }
+
+    float operator""_scaled(unsigned long long value) {
+        return value * ImHexApi::System::getGlobalScale();
+    }
+
+    ImVec2 scaled(const ImVec2 &vector) {
+        return vector * ImHexApi::System::getGlobalScale();
+    }
+
+    ImVec2 scaled(float x, float y) {
+        return ImVec2(x, y) * ImHexApi::System::getGlobalScale();
+    }
+
+}