AudioPlayerView: Replace seek buttons by shuffle and repeat buttons
This merge request brings an adjustment to:
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The seek buttons that are here replaced by the shuffle and repeat mode ones in order to make them more reachable.
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The icons of these buttons are also updated to improve the accessibility. When the shuffle mode is enabled and/or a repeat mode is selected, the respective icons are updated and colored to make them stand out for the user.
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An indicator in a form of a dot also appears below the icons when the options are enabled for accessibility purposes.
Credits to @Corbax for the icons, thanks!