Update gitea download and switch to xz files

XZ files are downloaded
Change that any grep is replaced by jq command, and sed for " replace

Add systemd service files as samples

download-act_runner.sh

@@ -6,8 +6,8 @@ BASE_FOLDER=$(dirname "$(readlink -f "$0")")"/";
 
 download_file=$(curl -s https://gitea.com/api/v1/repos/gitea/act_runner/releases/latest |\
 	jq ".assets[].browser_download_url" |\
-	cut -d '"' -f 2 |\
-	grep "${arch}$");
+	sed -e 's/"//g' |\
+	grep "${arch}.xz$");
 version=$(echo "${download_file}" | cut -d "/" -f 8);
 file=$(echo "${download_file}" | cut -d "/" -f 9);
 if [ -f "${download_folder}/${file}" ]; then
@@ -19,7 +19,7 @@ echo "act_runner version to download: ${version}";
 cd "${download_folder}" || exit;
 curl -s https://gitea.com/api/v1/repos/gitea/act_runner/releases/latest |\
 	jq ".assets[].browser_download_url" |\
-	cut -d '"' -f 2 |\
+	sed -e 's/"//g' |\
 	grep "${arch}$" |\
 	xargs curl -LJO --output-dir "${download_folder}"
 cd - || exit;