feedback component: Support for overshoot_duration

Allows the cover to overshoot max open-closed positions by some specific duration

Author: AchilleGR

content/components/cover/feedback.md

@@ -156,6 +156,11 @@ Additional options:
   issuing a command to reaching endstop.
   Defaults to `0s`.
 
+- **overshoot_duration** (*Optional*, [Time](#config-time)): After the cover reaches max opened or closed position (0% or 100%),
+  keep it moving for this duration before stopping. Intended to reset any accumulated error when doing multiple partial
+  open/close actions. Does nothing if endstops are used.
+  Defaults to `0s`.
+
 - **update_interval** (*Optional*, [Time](#config-time)): The interval
   to publish updated position information to the UI while the cover is moving.
   Defaults to `1s`.