Add a Bazel config_setting that allows to enable Java full protos.

Because Tinkey depends on full protos, Tink for Java had provided two
flavors for every target that depends on protos. Since this new setting
allows users to dynamically select which protos they want to build Tink
with, Tink will default to lite protos and users that need full protos
(e.g., to build Tinkey) can build Tink with:

bazel build ... --define use_java_proto_full=true

Change-Id: I42c9589d96269e969f671ecc20e6578c73bda7ce
ORIGINAL_AUTHOR=Thai Duong <thaidn@google.com>
GitOrigin-RevId: 1404cfdeb3fe9c4e1c120eb5c9e57532c1c0cfa1