feat: Create releases in CI (#2168)

Fix: https://github.com/XRPLF/clio/issues/1779

.github/scripts/prepare-release-artifacts.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -ex -o pipefail
+
+BINARY_NAME="clio_server"
+
+ARTIFACTS_DIR="$1"
+if [ -z "${ARTIFACTS_DIR}" ]; then
+    echo "Usage: $0 <artifacts_directory>"
+    exit 1
+fi
+
+cd "${ARTIFACTS_DIR}" || exit 1
+
+for artifact_name in $(ls); do
+    pushd "${artifact_name}" || exit 1
+    zip -r "../${artifact_name}.zip" ./${BINARY_NAME}
+    popd || exit 1
+
+    rm "${artifact_name}/${BINARY_NAME}"
+    rm -r "${artifact_name}"
+
+    sha256sum "./${artifact_name}.zip" > "./${artifact_name}.zip.sha256sum"
+done