feat: add C++ ImGui functions for core UI and visualization

Funciones C++/ImGui para dashboards (grid, panel, docking, sidebar, tabs),
visualizaciones (candlestick, gauge, histogram, pie, sparkline, heatmap,
scatter, line, bar, surface3d, kpi, table), grafos (force layout, renderer,
viewport, spatial hash, types) y utilidades (time series buffer, tracy zones,
memory/fps overlay, plot theme).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cpp/functions/viz/table_view.h

@@ -0,0 +1,6 @@
+#pragma once
+
+// Renders an interactive table with sorting indicators and scroll using the ImGui Tables API.
+// Call within an ImGui frame.
+// Returns true if the table was rendered visible, false if clipped/skipped.
+bool table_view(const char* id, const char* const* headers, int col_count, const char* const* cells, int row_count);