Improve and fix "add-subtitle" icon

data/icons/CMakeLists.txt

@@ -49,6 +49,7 @@ ecm_install_icons(ICONS
   16-actions-keyframe-previous.svg
   16-actions-keyframe-record.svg
   16-actions-keyframe-remove.svg
+  16-actions-add-subtitle.svg
   22-actions-keyframe.svg
   22-actions-keyframe-add.svg
   22-actions-keyframe-disable.svg

data/icons/breeze-dark/16/add-subtitle.svg

+<svg version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style id="current-color-scheme" type="text/css">.ColorScheme-Text {
+        color:#eff0f1;
+      }</style>
+    </defs>
+    <path class="ColorScheme-Text" d="m10.005155 10v1h1.994845v-1zm-6.005155-2v1h8v-1zm0 2v1h4v-1zm-2-7v10h12v-10zm1 1h10v8h-10z" fill="currentColor"/>
+</svg>

data/icons/breeze-dark/22/add-subtitle.svg

+<svg version="1.1" viewBox="0 0 22 22" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style id="current-color-scheme" type="text/css">.ColorScheme-Text {
+        color:#eff0f1;
+      }</style>
+    </defs>
+    <path class="ColorScheme-Text" d="m12.988351 13.005255v0.999097h4.009739v-0.999097zm-7.9879705-1.993516v1.004563h11.99611v-1.004563zm0 1.992483v0.999097h6.0046925v-0.999097zm-2.0083673-8.0012635v12.002158h16.017557v-12.002158zm1.0136936 1.0060301h13.999508v10.002165h-13.999508z" fill="currentColor"/>
+</svg>

data/icons/breeze-dark/CMakeLists.txt

@@ -7,6 +7,7 @@ INSTALL(FILES
   16/keyframe-previous.svg
   16/keyframe-record.svg
   16/keyframe-remove.svg
+  16/add-subtitle.svg
   DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/16)
 
 INSTALL(FILES
@@ -18,4 +19,5 @@ INSTALL(FILES
   22/keyframe-previous.svg
   22/keyframe-record.svg
   22/keyframe-remove.svg
+  22/add-subtitle.svg
   DESTINATION ${ICON_INSTALL_DIR}/breeze-dark/actions/22)

data/icons/sc-actions-add-subtitle.svg

-<svg xmlns="http://www.w3.org/2000/svg" id="svg17" viewBox="0 0 22 22" height="22" width="22"><defs id="defs3051"><style id="current-color-scheme">.ColorScheme-Text{color:#232629}</style></defs><g id="g15" class="ColorScheme-Text" fill="currentColor"><g id="g13" class="ColorScheme-Text"><path id="path5490-6-3-0-1-7" class="ColorScheme-Text" d="M2.99 5.018v11.964h16.02V5.018zm1.336 1h13.348v9.99H4.326z" color="currentColor" stroke-width=".324"/><g id="g11" class="ColorScheme-Text"><g id="g9" class="ColorScheme-Text" color="currentColor"><path id="path5" class="ColorScheme-Text" d="M5.506 9.906v1.558h10.988V9.906zm0 3.115v1.56H11v-1.56z" stroke-width=".687"/><path id="path7" class="ColorScheme-Text" d="M12.997 13.02v1.56h3.497v-1.56z" stroke-width=".548"/></g></g></g></g></svg>
+<svg version="1.1" viewBox="0 0 22 22" xmlns="http://www.w3.org/2000/svg">
+    <defs>
+        <style id="current-color-scheme" type="text/css">.ColorScheme-Text {
+        color:#232629;
+      }</style>
+    </defs>
+    <path class="ColorScheme-Text" d="m12.988351 13.005255v0.999097h4.009739v-0.999097zm-7.9879705-1.993516v1.004563h11.99611v-1.004563zm0 1.992483v0.999097h6.0046925v-0.999097zm-2.0083673-8.0012635v12.002158h16.017557v-12.002158zm1.0136936 1.0060301h13.999508v10.002165h-13.999508z" fill="currentColor"/>
+</svg>