Add missing proxy features to hdf5 crate

[ajtribick]

Proxy features from hdf5-sys crate, since cargo doesn't allow the following:

[dependencies]
hdf5 = { version = "0.8.1", features = ["hdf5-sys/static"] }

[mulimoen]

I think this should wait till we bump MSRV to 1.60 and use weak dependencies. This way it will be less confusing if one specifies zlib, if done as of now this will compile and use the included version of hdf5-c.

We have to specify what a static build should mean. In some instances the hdf5-c library is packaged as a static library which could be used directly. Ought we rename this flag to build-from-source to make this less ambigous?

The hl, threadsafe, deprecated options are only necessary for users that use hdf5-sys indirectly (such as georust/netcdf), and they need not be proxied.

Finally: This has a workaround which is including hdf5-sys yourself in your Cargo.toml and specifying exactly how you want the library built.