Move PublicFormat from libandroid_runtime to libui

PublicFormat is defined in android_view_Surface.
However this and related functions are also used in libmediandk
which is both NDK and LL-NDK. As a LL-NDK it should run without
libandroid_runtime.

By moving PublicFormat definition and its utility functions
into libui, LL-NDK can use it without cost of libandroid_runtime.
And also PublicFormat will be deprecated(b/126594675).

This is a part cutting dependency from libmediandk to
libandroid_runtime.

Note: applied clang-format

Bug: 124268753
Test: m -j
Change-Id: I7215dde607b425f7a0d47a6541b83fbe3a0deaf4
Merged-In: I7215dde607b425f7a0d47a6541b83fbe3a0deaf4