This was causing invalid connections during test setup. Not having a null preview engine will prevent dereferencing a null pointer once messaging tests are implemented, however, the webengine will not work correctly due to missing resources which may be corrected in a subsequent patch.

This commit also moves .clang-format to the root repo dir so it will apply to the test source code (the test source code should be within the src dir).

Gitlab: #899
Change-Id: I8cac1fb937a0c60a91219b11ed1e0b5f323b1816

This is the first in a series for cleaning up the top directory (root)
of the repository and move various files/folders into nicely organized
directory structures.

GitLab: #749
Change-Id: If59b74fff981df242bc26e62a070bdb81d7baded

Change-Id: I12759a9d830c8a8b1099567a3350e68293c5d223

Change-Id: I8fd6b6dcf9a7bf539add5a9e64d14821ecc89387

Change-Id: I32bfdd2a618aa7ac6181da2697e241667b010aab