Add ability to monitor specific tools updates

[maximbircu]

Abstract

Library consumers might need to monitor specific tools update to react specifically to the new configuration values.

Requirements

Add a critical flag to the DevTool.
Whenever a tool with critical = true gets updates the library consumer should be notified through DevTools.kt#L15

Consumer flow

Usecase 1

1. Open the sample app
2. Update any critical tool (You can find the critical tool using the help dialog)
3. Make sure you see a toast telling that a critical update just happened

Usecase 2

1. Open the sample app
2. Update any non-critical tool (You can find a non-critical tool using the help dialog)
3. Make sure you see a toast telling that a non-critical update just happened