Add release workflow and release script for Homebrew delivery

release.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+set -euo pipefail
+cd "$(dirname "$0")"
+
+if [ "$#" -ne 1 ]; then
+    echo "usage: $0 <version>    e.g. ./release.sh 1.0.1" >&2
+    exit 1
+fi
+VERSION="$1"
+
+./build-app.sh
+
+mkdir -p dist
+rm -f dist/Kapture.zip
+ditto -c -k --keepParent Kapture.app dist/Kapture.zip
+shasum -a 256 dist/Kapture.zip
+
+echo
+echo "Tag and release with:"
+echo "  git tag v$VERSION && git push origin v$VERSION"
+echo "The GitHub Actions release workflow will upload dist/Kapture.zip automatically."