lineage: Use 'intermediates-dir-for' for bootanimation src

Place bootanimation source files in a dedicated intermediate
dir to prevent the presence of a zero-byte archive in the
target zip file.

Change-Id: Iefd54bbcadd17985eb15e253aa4c74fbb7940b0d
Signed-off-by: Chippa-a <bagirovvusal99@gmail.com>