zipfuse: a read-only fuse implementation for zip archive

zipfuse is a read-only FUSE implementation for zip archive. It will be
used to make files embedded in APKs (which are zip files) be accessible
as regular files in microdroid.

Bug: 186377508
Test: atest ZipFuseTest
Change-Id: Idf0fb4d32b8a2d957da9188fedeebb5610050e65
diff --git a/zipfuse/.cargo/config.toml b/zipfuse/.cargo/config.toml
new file mode 100644
index 0000000..b87b13a
--- /dev/null
+++ b/zipfuse/.cargo/config.toml
@@ -0,0 +1,4 @@
+# Mounting requires root privilege. The fuse library in crosvm doesn't support
+# fusermount yet.
+[target.x86_64-unknown-linux-gnu]
+runner = 'unshare -mUr'