The InAppMessage WebView is hosted inside a Card container.
By default the Card background color is grey. This is causing
unintended results(grey bg being seen) for  in-app messages
where dimensions are set to fill the entire screen but the content
only occupies a portion of it.

As a soution, set the container Card's background color to Transperent
as with the WebView.

Set in-app web view container background to be transparent

Currently, the ComposeView attached to the Activity when
presentables are shown is not removed until the activity
is destroyed.
This is OK for most use-cases that follow the sigle window mode
where the newly resumed activity obscures the previous one, and
the presentable redraws on the new activity. However, this approach
of waiting until the activity is destroyed may result in the
presentables being shown on each activity in a multi-window side-by-side
mode.
While we do not support multi-window mode, we should ensure that the
experience does not deteriorate in such a case. As a solution,
change the current detachment logic to to the following:
 - Track the current activity that the presentable is attached to
 - When presentable is visble on Activity A and another activity B
   resumes, use the Android activity co-ordination guarantees to
   detach presentable from Activity-A and re-attach to Activity B
 - Reset the reference held to the activity that the presentable is
   attached to when the activity is destroyed.

The SDKs often needs to change its standard business logic to
enable debugging/testing workflows. We need an event structure that
external systems can follow to generate an event that communicates
to the listening SDK extension that it should operate in a debug
mode - a mode outside of expected production behavior if one exists.

This commit adds an eventSource "com.adobe.eventSource.debug" to
identify such events.
Further, it adds utility methods to identify the eventType and eventSource
provided within the `data.debug` content of such events.

Moved event data extraction logic to a common
place.

Detach presentables before re-attaching to top Activity

Do not initialize SDK in direct boot mode

Add support for debug events

Update versions [Core-3.1.0]

Merge `dev` into `staging` for `Core v3.1.0`

Switch Event extension functions to properties

Merge `staging` with `dev` for a patch