maint: Use Octave coding convention of space between function name and parentheses in libgui/. * libgui/graphics/BaseControl.cc, libgui/graphics/Canvas.cc, libgui/graphics/Figure.cc, libgui/graphics/FigureWindow.cc, libgui/graphics/FigureWindow.h, libgui/graphics/QtHandlesUtils.cc, libgui/graphics/Table.h, libgui/graphics/annotation-dialog.cc, libgui/graphics/gl-select.cc, libgui/src/command-widget.cc, libgui/src/dialog.cc, libgui/src/documentation-bookmarks.cc, libgui/src/documentation.cc, libgui/src/dw-main-window.cc, libgui/src/files-dock-widget.cc, libgui/src/gui-settings.cc, libgui/src/gui-settings.h, libgui/src/gui-utils.cc, libgui/src/led-indicator.cc, libgui/src/m-editor/file-editor-tab.cc, libgui/src/m-editor/find-dialog.cc, libgui/src/m-editor/octave-qscintilla.cc, libgui/src/main-window.cc, libgui/src/main-window.h, libgui/src/octave-dock-widget.cc, libgui/src/set-path-dialog.cc, libgui/src/set-path-model.cc, libgui/src/settings-dialog.cc, libgui/src/tab-bar.cc, libgui/src/tab-bar.h, libgui/src/terminal-dock-widget.cc, libgui/src/variable-editor-model.cc, libgui/src/variable-editor-model.h, libgui/src/variable-editor.cc, libgui/src/workspace-model.h, libgui/src/workspace-view.cc: Use Octave coding convention of space between function name and parentheses.

--- a/libgui/src/terminal-dock-widget.cc	Mon Apr 08 13:59:26 2024 -0700
+++ b/libgui/src/terminal-dock-widget.cc	Mon Apr 08 14:39:40 2024 -0700
@@ -122,10 +122,10 @@
   font.setPointSize
     (settings.int_value (cs_font_size));
 
-  QFontMetrics metrics(font);
+  QFontMetrics metrics (font);
 
-  int win_x =  metrics.maxWidth()*80;
-  int win_y =  metrics.height()*25;
+  int win_x =  metrics.maxWidth ()*80;
+  int win_y =  metrics.height ()*25;
 
   int max_x = QGuiApplication::primaryScreen ()->availableGeometry ().width ();
   int max_y = QGuiApplication::primaryScreen ()->availableGeometry ().height ();