Default playback speed: Allow custom values

Users might want to select a specific default playback speed value that is not proposed within the values we display in the options.

It could be interesting to allow users to type in a value (within a range) and save it as the default playback speed value.

changed milestone to %3.5.0

added Feature user feedback labels

assigned to @diogo.simao-marques

added Minor label

changed milestone to %4.0.0

mentioned in issue vlc#28583 (closed)

How about this:

• Add Custom... below 4.00x
• Existing action sheet is dismissed, a new one is presented with a continuous slider bar; user can pick from 0.01 to 4.00 and commit with a Done button.
• When a custom speed is set, it is inserted as a new value in the primary action sheet, in the correct position preserving the order of slowest to fastest. If the user selects one of the regular options, the previous custom setting will not be there anymore when they open the action sheet in the future.

or:

• replace this list with a slider. The user can choose any value
• Have a minus button on the left, and a plus button on the right, that increments by default values, for example, (+) -> 1.00 to 1.25.