Fine tune sound algorithm

[skewyapp]

Task
[x] Evaluate feasibility
[ ] Check for feasible increments of volume
[ ] Add slider for volume
[ ] Add color code on slide for "too little" and "too much"

Background

• Give more user flexibility for fine tuning
• User request in reviews (Str8 Talknewfone)
• A slider can actually show the user whether sound is on
• Since the ultrasonic jam is played at the volume setting, this is important user feedback
• User can turn on jamming, but if his volume is set to 0, jamming will not work

Result
tba

[skewyapp]

The way to display it is either below the switch play or next to it.
It either breaks the alignment of the slider (next to it) or occupies a lot of space (below it).

Below

Next to it

Current choice is next to it, as the techncial advantage outweighs the visual one.

[skewyapp]

Code for layout. Since the time to figure out how to change the track background colour is too long. This will not be included in the coming release.

 <com.google.android.material.slider.Slider
        android:id="@+id/slider_volume"
        android:layout_width="240dp"
        android:layout_height="8dp"
        android:stepSize="2"
        android:valueFrom="0"

        android:valueTo="100"
        android:layout_marginStart="16dp"
        app:layout_constraintStart_toEndOf="@id/switch_play"
        app:layout_constraintTop_toTopOf="@id/switch_play" />