[Library Manager] Add Sensirion SVM40 libraries

[rnestler]

I'd like to add the following libraries:

• "Sensirion UART SVM40" https://github.com/Sensirion/arduino-uart-svm40
• "Sensirion I2C SVM40" https://github.com/Sensirion/arduino-i2c-svm40

[cmaglie]

Done.