add small script to help extracting more relevant changes

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

debian/scripts/prepare-changes.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+if [[ $1 =~ ^-(h|-help)$ ]]; then
+    echo "usage: $0 [<FROM-VERSION>]"
+    echo ""
+    echo "Filter out irrelevant entries (sponsors, chore, docs) from the upstream changelog."
+    exit 0
+fi
+
+repo="$(git rev-parse --show-toplevel)"
+
+cfn="$repo/changes.new.tmp"
+
+cp "$repo/eslint/CHANGELOG.md" "$cfn"
+
+sed -ri 's/^\* \S+ /+ /g' "$cfn"
+
+sed -i '/ Sponsors: /d' "$cfn"
+sed -i '/ Chore: /d' "$cfn"
+sed -i '/ Docs: /d' "$cfn"
+
+if [[ $1 ]]; then
+   version="$1"
+   sed -i "/^$version -/Q" "$cfn"
+   sed -i '/^\+ /!d' "$cfn"
+fi
+
+mv "$cfn" "$repo/changes"
+
+echo "trimmed changes available at '$repo/changes'"