chore: Added Event Specific Generic Classes and Handlers(kinda choreUtils)

[s-ayush2903]

Close #14

All the following mentioned are either classes or Objects

• Implemented required dependencies for espresso and tests
• Implemented DataChannelManager(DCM) for executing events down the line
• Implemented EspressoIdlingResource(a custom class for testing)
• Implemented Logger(for logging anywhere)
• Implemented StateEvent class(for handling error responses in UI via firing some stateEvents like displaying a progress bar, showing errorInfo, event/uiController name)
• Implemented StateEventManager(for keeping a track of events and respond accordingly)
• Implemented DataState(for responding accordingly when get a response from the server/firestore)
• Implemented MessageStack class (for propagating messages from UI)
• Implemented a custom ToDoCallback interface(nothing fancy, basic)
• Minute Documentation

[s-ayush2903]

Add documentation, refactor classes in the next commit

[s-ayush2903]

Please do note that many of the classes implemented above are directly copied from googleSamples and modified according to the need, they all ain't my innovations

[s-ayush2903]

Add documentation, refactor classes in the next commit

Done and added config for semantics checker bot