AudioPlayerView: Replace seek buttons by shuffle and repeat buttons

This merge request brings an adjustment to:

• The seek buttons that are here replaced by the shuffle and repeat mode ones in order to make them more reachable.

• 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.

• 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!

changed milestone to %3.4.7

added Interface Player a11y labels

approved this merge request

@Corbax thank you for putting the dot below the icons to underline the selected state! This is every nice, especially for visually handicapped people like me!

approved this merge request

merged