enable wasm support
    
    Currently, wasmedge is the only wasm provider in Fedora. That may change
    with time. All wasm providers will include a `Provides: wasm-library`
    which will be a hard dependency for crun along with a weak dependency
    that the user can change per need.
    
    Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>