Zip offers different compression algorithms and levels. For packaging,
sometimes faster compression speed is more important than size.
With pkg_tar, there is already the option to use a custom compressor.

For pkg_zip these use case are now possible with the exposed zip
compression_level and compression_type arguments in this PR.

There's a new test case that verifies that the compression settings work by
comparing the compressed file sizes.

The default compression level is the same as recently change for pkg_tar in
bazelbuild#720

Zip offers different compression algorithms and levels. For packaging,
sometimes faster compression speed is more important than size.
With pkg_tar, there is already the option to use a custom compressor.

For pkg_zip these use case are now possible with the exposed zip
compression_level and compression_type arguments in this PR.

There's a new test case that verifies that the compression settings work by
comparing the compressed file sizes.

The default compression level is the same as recently change for pkg_tar in
bazelbuild#720

Zip offers different compression algorithms and levels. For packaging,
sometimes faster compression speed is more important than size.
With pkg_tar, there is already the option to use a custom compressor.

For pkg_zip these use case are now possible with the exposed zip
compression_level and compression_type arguments in this PR.

There's a new test case that verifies that the compression settings work by
comparing the compressed file sizes.

The default compression level is the same as recently change for pkg_tar in
bazelbuild#720

Zip offers different compression algorithms and levels. For packaging,
sometimes faster compression speed is more important than size.
With pkg_tar, there is already the option to use a custom compressor.

For pkg_zip these use case are now possible with the exposed zip
compression_level and compression_type arguments in this PR.

There's a new test case that verifies that the compression settings work by
comparing the compressed file sizes.

The default compression level is the same as recently change for pkg_tar in
bazelbuild#720

Zip offers different compression algorithms and levels. For packaging,
sometimes faster compression speed is more important than size. With
`pkg_tar`, there is already the option to use a custom compressor,
there's no similar option for `pkg_zip` yet.

This PR exposes the zip `compression_level` and `compression_type`
arguments for `pkg_zip`, thus enabling the use case.

The list of compressions is the same as Python's `ZipFile`:
https://docs.python.org/3/library/zipfile.html#zipfile.ZIP_STORED

There's a new test case that verifies that the compression settings work
by comparing the compressed file sizes.

The default compression level is the same as in this recent change for
`pkg_tar` in #720