Add support for retrieving modules from a Bindle

[Shark]

There is not a single way of how Wasm modules are distributed. There are a lot of practical options because of their comparably small size. In Cloud-Native, OCI/Docker registries are a natural fit since they're required anyway for container images. Other viable options include the WebAssembly package manager WAPM that already serves WASI-compatible Wasm modules. Moreover, the Bindle project is another alternative that provides a modern infrastructure for distributing applications as a bunch of independent bundles with well-defined relationships between each of them.

Currently, this project only supports OCI registries and the format created by the wasm-to-oci tool (see roadmap). Other module sources can be represented in the invocation format without issue however:

- name: wasm
  plugin:
    wasm:
      module:
        # you would use one of these options
        oci: ghcr.io/someone/somemodule:latest    # already supported
        wapm: syrusakbary/[email protected]           # on the roadmap
        bindle: example.com/stuff/mybindle/v1.2.3 # on the roadmap