Parse APK manifest to extract version etc

Add libapkmanifest to encapsulate the parsing, with a small C++
library on top of libandroidfw.

Extract the zip-handling code from libapkverify into a separate
libapkzip, and fix up a bunch of tests tests, to keep the build happy.

We don't do anything with the manifest information except log it; more
to come in another CL.

Bug: 299591171
Test: atest libapkzip.test libapkverify.integration_test
      libapkverify.test
Test: Manual - run VM, inspect logs.
Change-Id: I56d3bb7309d43ecb598a33320705d31948710f83
diff --git a/libs/apkverify/src/sigutil.rs b/libs/apkverify/src/sigutil.rs
index 99132b6..7d03bb2 100644
--- a/libs/apkverify/src/sigutil.rs
+++ b/libs/apkverify/src/sigutil.rs
@@ -17,6 +17,7 @@
 //! Utilities for Signature Verification
 
 use anyhow::{anyhow, ensure, Error, Result};
+use apkzip::{set_central_directory_offset, zip_sections};
 use byteorder::{LittleEndian, ReadBytesExt};
 use bytes::{Buf, BufMut, Bytes, BytesMut};
 use openssl::hash::{DigestBytes, Hasher, MessageDigest};
@@ -24,7 +25,6 @@
 use std::io::{self, Cursor, ErrorKind, Read, Seek, SeekFrom, Take};
 
 use crate::algorithms::SignatureAlgorithmID;
-use crate::ziputil::{set_central_directory_offset, zip_sections};
 
 const APK_SIG_BLOCK_MIN_SIZE: u32 = 32;
 const APK_SIG_BLOCK_MAGIC: u128 = 0x3234206b636f6c4220676953204b5041;