Update build configuration files

.githooks/prepare-commit-msg

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+# Do not edit this file. It is automatically generated by https://www.oliverdavies.uk/build-configs.
+
+# Load the issue ID from an `.issue-id` file within the project and replace the
+# `ISSUE_ID` placeholder within a Git commit message.
+#
+# For example, running `echo "OD-123" > .issue-id` will add `Refs: OD-123` to
+# the commit message.
+#
+# This also works with multiple issue IDs in the same string, e.g.
+# "OD-123 OD-456", or IDs on multiple lines.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+PROJECT_DIR=$(git rev-parse --show-toplevel)
+ISSUE_FILE="$PROJECT_DIR/.issue-id"
+
+if [ -f "${ISSUE_FILE}" ]; then
+  ISSUE_IDS=$(cat "${ISSUE_FILE}" | tr '\n' ',' | tr ' ' ',' | sed 's/,$//' | sed 's/,/, /g')
+
+  if [ -n "${ISSUE_IDS}" ]; then
+    sed -i.bak "s/# Refs:/Refs: $ISSUE_IDS/" "$1"
+  fi
+fi