Implement methods to list devices Draft

• Implement methods getDevices() and getDevice().
• Improve robustness of network calls

Update changelog and pubspec with correct version

Merge pull request #5 from ianmaciel/develop

Fix changelog and pubspec to sync with pub.dev

0.0.2

Include configuration for github actions

Version 0.0.1 - Implement the minimum the minimum necessary to toggle a device

0.0.1 Implement basic methods to toggle a device

• getCredentials()
• toggleDevice() (without consider the initial state)
• setDevicePowerState()
• getDevice()