message: added status badges of GitHub Action pipelines
diff: # blockchain-carbon-accounting
  +[![CI](https://github.com/hyperledger-labs/blockchain-carbon-accounting/actions/workflows/ci.yml/badge.svg)](https://github.com/hyperledger-labs/blockchain-carbon-accounting/actions/workflows/ci.yml)
  +[![Test Report](https://github.com/hyperledger-labs/blockchain-carbon-accounting/actions/workflows/test-report.yml/badge.svg)](https://github.com/hyperledger-labs/blockchain-carbon-accounting/actions/workflows/test-report.yml)
  +
  This repository contains the code for the [Hyperledger Carbon Accounting and Neutrality Working Group](https://wiki.hyperledger.org/display/CASIG/Carbon+Accounting+and+Certification+Working+Group). Each
  sub-folder is for a different project of the Working Group and has its own code and instructions:
  