impr: Vastly improved 3D Visualizer (#1456)

Based entirely on @paxcut's amazing PR #1443

---------

Co-authored-by: paxcut <paxcut@outlook.com>
Co-authored-by: paxcut <53811119+paxcut@users.noreply.github.com>

plugins/builtin/source/content/pl_visualizers/chunk_entropy.cpp

@@ -0,0 +1,28 @@
+#include <hex/helpers/utils.hpp>
+
+#include <content/pl_visualizers/visualizer_helpers.hpp>
+
+#include <implot.h>
+#include <imgui.h>
+#include <content/helpers/diagrams.hpp>
+
+#include <hex/ui/imgui_imhex_extensions.h>
+
+namespace hex::plugin::builtin {
+
+    void drawChunkBasedEntropyVisualizer(pl::ptrn::Pattern &, pl::ptrn::IIterable &, bool shouldReset, std::span<const pl::core::Token::Literal> arguments) {
+        // Variable used to store the result to avoid having to recalculate the result at each frame
+        static DiagramChunkBasedEntropyAnalysis analyzer;
+
+        // Compute data
+        if (shouldReset) {
+            auto pattern   = arguments[0].toPattern();
+            auto chunkSize = arguments[1].toUnsigned();
+            analyzer.process(pattern->getBytes(), chunkSize);
+        }
+
+        // Show results
+        analyzer.draw(ImVec2(400, 250), ImPlotFlags_CanvasOnly);
+    }
+
+}