[feature request] Decrease work per block

[rigid]

It would be nice if there would be a way to decrease the work-time by a constant after each block. e.g. work=30, work_decrease=5, break=10, rest=60, 5 intervals per block would result in:

1. Warmup (60s)

• 30s work / 10s break
• 25s work / 10s break
• 20s work / 10s break
• 15s work / 10s break
• 10s work / 10s break

2. Cooldown (60s)

That would help with ongoing exhaustion and can increase the motivation to do more blocks. A value of 0 as default would replicate the current behaviour.