forward http_archive type to submodules

[malt3]

This may be very specific to our deployment, but in my teams monorepo, we require any http_archive dependencies to be mirrored with a standardized file name.

As an example, we would depend on rules_nixpkgs like this:

http_archive(
    name = "io_tweag_rules_nixpkgs",
    sha256 = "3ff4a25c8021ce2b0a15b4892acd2246fb1aae1d143ecdbd12bb770ad6e1741d",
    strip_prefix = "rules_nixpkgs-52d34c00171acd04d27626571d7d40748d648d2a",
    urls = [
        "https://cdn.confidential.cloud/constellation/cas/sha256/3ff4a25c8021ce2b0a15b4892acd2246fb1aae1d143ecdbd12bb770ad6e1741d",
        "https://github.com/tweag/rules_nixpkgs/archive/52d34c00171acd04d27626571d7d40748d648d2a.tar.gz",
    ],
    type = "tar.gz",
)

This requires us to specify the type field in http_archive and to also forward this field in other http_archive rules that are created from the original rule.