debranding - Replaced Plymouth spinners with EmComm Tools spinner

logos/et-spinner/make-spinner.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+#
+# Author  : Gaston Gonzalez
+# Date    : 5 September 2026
+# Purpose : Generate 36 PNG images for use as a spinner for Plymouth
+#
+# throbber-xxxx.png is the looping animation on startup
+# animation-xxxx.png is the end frame animation
+#
+# For simplicity, 36 frames are generated for both using ImageMagick.
+
+SPINNER_PNG="et-32x32-transparent.png"
+
+for i in $(seq 0 35); do
+  angle=$((i * 10))
+  frame=$(printf "%04d" $((i + 1)))
+
+  convert ${SPINNER_PNG}  \
+    -background none \
+    -rotate "${angle}" \
+    -gravity center \
+    -extent 32x32 \
+    "animation-${frame}.png"
+
+  # Make a copy for the throbber frame looping animation
+  cp "animation-${frame}.png" "throbber-${frame}.png"
+done