The extbase ViewInterface fits little purpose: Most
methods are part of the fluid based class and interface
chain, with the exception of setControllerContext(),
which is deprecated, and initializeView(), which is
always only implemented as empty method.

The patch deprecates the interface keeping its usage
in API classes to prevent compatibility issues and
prepares the interface removal for v12.

Change-Id: I012ad0307f7a40923a793f55b596a27e8b770bf4
Resolves: #95222
Releases: master
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71089


Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>