Clarify deprecations.

src/View/Icon/BootstrapIcon.php

@@ -4,6 +4,9 @@ namespace Tools\View\Icon;
 
 use Tools\View\Icon\Collector\BootstrapIconCollector;
 
+/**
+ * @deprecated Use Templating plugin icon classes instead.
+ */
 class BootstrapIcon extends AbstractIcon {
 
 	/**

src/View/Icon/FeatherIcon.php

@@ -4,6 +4,9 @@ namespace Tools\View\Icon;
 
 use Tools\View\Icon\Collector\FeatherIconCollector;
 
+/**
+ * @deprecated Use Templating plugin icon classes instead.
+ */
 class FeatherIcon extends AbstractIcon {
 
 	/**

src/View/Icon/FontAwesome4Icon.php

@@ -4,6 +4,9 @@ namespace Tools\View\Icon;
 
 use Tools\View\Icon\Collector\FontAwesome4IconCollector;
 
+/**
+ * @deprecated Use Templating plugin icon classes instead.
+ */
 class FontAwesome4Icon extends AbstractIcon {
 
 	/**

src/View/Icon/FontAwesome5Icon.php

@@ -4,6 +4,9 @@ namespace Tools\View\Icon;
 
 use Tools\View\Icon\Collector\FontAwesome5IconCollector;
 
+/**
+ * @deprecated Use Templating plugin icon classes instead.
+ */
 class FontAwesome5Icon extends AbstractIcon {
 
 	/**

src/View/Icon/FontAwesome6Icon.php

@@ -4,6 +4,9 @@ namespace Tools\View\Icon;
 
 use Tools\View\Icon\Collector\FontAwesome6IconCollector;
 
+/**
+ * @deprecated Use Templating plugin icon classes instead.
+ */
 class FontAwesome6Icon extends AbstractIcon {
 
 	/**

src/View/Icon/MaterialIcon.php

@@ -4,6 +4,9 @@ namespace Tools\View\Icon;
 
 use Tools\View\Icon\Collector\MaterialIconCollector;
 
+/**
+ * @deprecated Use Templating plugin icon classes instead.
+ */
 class MaterialIcon extends AbstractIcon {
 
 	/**