readme: add CI badges and examples list

Author: pennam

README.md

@@ -1,3 +1,14 @@
-# Arduino Cloud Utils
+# 🛠️ Arduino Cloud Utils
 
-This library contains a set of functionalities that may be shared among cloud related projects, in particular functionalities for ArduinoIoTCloud
+[![Arduino Lint](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/check-arduino.yml) [![Compile Examples](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/compile-examples.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/compile-examples.yml) [![Spell Check](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/spell-check.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/spell-check.yml) [![Sync Labels](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/sync-labels.yml/badge.svg)](https://github.com/arduino-libraries/Arduino_CloudUtils/actions/workflows/sync-labels.yml) 
+
+This library contains a set of functionalities that may be shared among cloud related projects, in particular functionalities for ArduinoIoTCloud
+
+# 🔧 Utilities
+* ✉️ [CRC16](examples/crc16)
+* 📧 [CRC32](examples/crc32)
+* 🔒 [CBOR decoder](examples/customCborDecoder)
+* 🔓 [CBOR encoder](examples/customCborEncoder)
+* ⬆️ [LZSS decoder](examples/lzssDecoder)
+* 💨 [SHA256](examples/sha256)
+* ⏲️ [Timed action](examples/timedBlink)