#736 New JavaFX spectral display and waterfall for both tuner and channel spectrums. (#2637)

* Popout configuration panel (top-left of display)
* Themed color support
* Reworked signal averating/smoothing
* Optional decibel overlay with corrected decibel calculations
* Integrated noise floor slider in  channel view
* Traffic channel overlays
* Popup channel information when hovering over playlist channels.
* Removes legacy swing components.

Co-authored-by: denny <dennis.sheirer@gmail.com>

src/main/java/io/github/dsheirer/gui/spectrum/RenderArea.java

@@ -0,0 +1,32 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.gui.spectrum;
+
+/**
+ * Size of a display section for rendering.
+ *
+ * @param width of the section in pixels
+ * @param height of the section in pixels
+ * @param plotHeight of the area above the bottom inset where the spectrum trace is drawn.  This is the same as the
+ * height for the waterfall.
+ */
+public record RenderArea(double width, double height, double plotHeight)
+{
+}