add universal _long_release and variants

wlx-overlay-s/src/res/config.yaml

@@ -95,7 +95,7 @@
 #color_accent: "#008cff"
 #color_danger: "#ff3300"
 #color_faded: "#668299"
-#color_background: "#010206",
+#color_background: "#010206"
 
 ## Multiplier for animation speed. 2.0 → double speed, 0.5 → half speed
 #animation_speed: 1.0
@@ -175,6 +175,10 @@
 #xr_click_sensitivity: 0.7
 #xr_click_sensitivity_release: 0.5
 
+## How many seconds to buttons need to be held
+## before it's considered a long press
+#long_press_duration: 1.0
+
 ## Change speed of scrolling
 # 0.5 → half the speed
 # 2.0 → twice the speed