Expand time interval options for Make jump controls

Fixes #1445

- Added additional options for customizing jump forward/backward.  Instead of just 5,
  10, and 30 seconds, we now have 5s, 10s, 15s, 30s, 60s, 2m, and 5m.
- Switched the jump interval to a list in the settings menu for better UX
- Reordered "Disable auto rewind time" for aesthetics in settings menu (it looked
  out of place after backwards time and forwards time were turned to dropdowns

The only downside of this (afaict), and what created the biggest challenge,
is the lack of numeric glyphs in the Material Symbols font.  They only have 5, 10,
and 30, which we were previously using.  Given that they don't have others, that means
we had to change strategies for displaying.  I switched all to generic backward and
forward icons and added the time interval as a label next to it so the user can still
tell at a glance what the setting is.  For consistency we don't use the numbered
glyphs anymore.  For more info on the Material Symbols font, see:
https://fonts.google.com/icons?icon.query=forward

However this does feel like two steps forward, one step back, though I can't think
of good options.  Other possibility would be to create SVGs, though I'm not skilled
enough to do that.  Personally this feels like a good compromise, but others will
probably differ. I considered using the numbered glyphs when the selected value was
5, 10, or 30, but when testing I found the inconsistency jarring and kind of janky.

components/app/AudioPlayer.vue

@@ -70,14 +70,20 @@
       <div id="playerControls" class="absolute right-0 bottom-0 mx-auto" style="max-width: 414px">
         <div class="flex items-center max-w-full" :class="playerSettings.lockUi ? 'justify-center' : 'justify-between'">
           <span v-show="showFullscreen && !playerSettings.lockUi" class="material-symbols next-icon text-fg cursor-pointer" :class="isLoading ? 'text-opacity-10' : 'text-opacity-75'" @click.stop="jumpChapterStart">first_page</span>
-          <span v-show="!playerSettings.lockUi" class="material-symbols jump-icon text-fg cursor-pointer" :class="isLoading ? 'text-opacity-10' : 'text-opacity-75'" @click.stop="jumpBackwards">{{ jumpBackwardsIcon }}</span>
+          <div v-show="!playerSettings.lockUi" class="jump-icon text-fg cursor-pointer flex items-center space-x-1" :class="isLoading ? 'text-opacity-10' : 'text-opacity-75'" @click.stop="jumpBackwards">
+            <span class="material-symbols">{{ jumpBackwardsItem.icon }}</span>
+            <span class="text-xs font-semibold leading-none">{{ jumpBackwardsItem.label }}</span>
+          </div>
           <div class="play-btn cursor-pointer shadow-sm flex items-center justify-center rounded-full text-primary mx-4 relative overflow-hidden" :style="{ backgroundColor: coverRgb }" :class="{ 'animate-spin': seekLoading }" @mousedown.prevent @mouseup.prevent @click.stop="playPauseClick">
             <div v-if="!coverBgIsLight" class="absolute top-0 left-0 w-full h-full bg-white bg-opacity-20 pointer-events-none" />
 
             <span v-if="!isLoading" class="material-symbols fill" :class="{ 'text-white': coverRgb && !coverBgIsLight }">{{ seekLoading ? 'autorenew' : !isPlaying ? 'play_arrow' : 'pause' }}</span>
             <widgets-spinner-icon v-else class="h-8 w-8" />
           </div>
-          <span v-show="!playerSettings.lockUi" class="material-symbols jump-icon text-fg cursor-pointer" :class="isLoading ? 'text-opacity-10' : 'text-opacity-75'" @click.stop="jumpForward">{{ jumpForwardIcon }}</span>
+          <div v-show="!playerSettings.lockUi" class="jump-icon text-fg cursor-pointer flex items-center space-x-1" :class="isLoading ? 'text-opacity-10' : 'text-opacity-75'" @click.stop="jumpForward">
+            <span class="material-symbols">{{ jumpForwardItem.icon }}</span>
+            <span class="text-xs font-semibold leading-none">{{ jumpForwardItem.label }}</span>
+          </div>
           <span v-show="showFullscreen && !playerSettings.lockUi" class="material-symbols next-icon text-fg cursor-pointer" :class="nextChapter && !isLoading ? 'text-opacity-75' : 'text-opacity-10'" @click.stop="jumpNextChapter">last_page</span>
         </div>
       </div>
@@ -221,11 +227,11 @@ export default {
 
       return items
     },
-    jumpForwardIcon() {
-      return this.$store.getters['globals/getJumpForwardIcon'](this.jumpForwardTime)
+    jumpForwardItem() {
+      return this.$store.getters['globals/getJumpForwardItem'](this.jumpForwardTime)
     },
-    jumpBackwardsIcon() {
-      return this.$store.getters['globals/getJumpBackwardsIcon'](this.jumpBackwardsTime)
+    jumpBackwardsItem() {
+      return this.$store.getters['globals/getJumpBackwardsItem'](this.jumpBackwardsTime)
     },
     jumpForwardTime() {
       return this.$store.getters['getJumpForwardTime']
@@ -1080,8 +1086,10 @@ export default {
 #playerControls {
   transition: all 0.15s cubic-bezier(0.39, 0.575, 0.565, 1);
   transition-property: width, bottom;
-  width: 128px;
-  padding-right: 24px;
+  width: auto;
+  min-width: 150px;
+  padding-left: 8px;
+  padding-right: 8px;
   bottom: 70px;
 }
 #playerControls .jump-icon {