Support recursive submodules in git dependencies

[snowp]

When using a Git dependency, raze generates a new_git_repository with init_submodules = True (

cargo-raze/impl/src/rendering/templates/remote_crates.bzl.template

Line 20 in 142d1b3

init_submodules = True,

)

We have a use case where we really want recursive_init_submodules set. Would it be reasonable to make this possible, either by making it the default or adding some configuration for this? Happy to do the work here either way