~xdavidwu/saf-cephfs

add our ceph fork as a submodule

to be wired up with gradle later
Containerfile: riggings for ghcr
Containerfile: initial work for containerized building

one step forward to finally hook ceph cmake onto gradle?
maybe we still want to ship prebuilts on a build variant for faster
development? idk
or, can we eventually hook every dependencies and stop using aur
contents, which make containerization not really that desired?
update gradle & wrapper

makes gradlew works without bash and which
build: update toolchain, opt-in predictive back
update prebuilts

brief changelog:
ceph v17.2.3, openssl 1.1.1q, ndk r25.b
README: update status, drop WIP flag

while this is not done, it is already useful enough for general cases
DocumentsProvider: set client_dirsize_rbytes=false
update prebuilts

brief changelog:
ceph v17.2.1, with logcat hack, dirsize_rbytes=false performance fix
openssl 1.1.1p
jni: update to quincy
MediaMetadataReader: support audio
DocumentsProvider: add video metadata support
MetadataReader: support mimetypes a la ExifInterface
DocumentsProvider: support reading exif metadata

MetadataReader is ported from AOSP android-12.0.0_r3,
frameworks/base/core/java/android/provider.
DocumentsProvider: fill mime-type on special files

prevents DocumentsUI from displaying a "null" and no icon
DocumentsProvider: use cursor extras for error when allowed

instead of toast + exception, use cursor extras for error string, as
reference recommends. DocumentsUI handles it and displays to user.
DocumentsProvider: detect symlink to dirs
tree: remove ceph.patch

this is unused since pacific rebase, which source is hosted in a new
standalone repo
DocumentsProvider: unify metadata row building

this also fix a case where full path are taken as display names
DocumentsProvider: simplify logging and toasting
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