Bundle loading

[shm12]

Today, the output of opa build -t wasm is a bundle.tar.gz file.
It will be really nice if we will be able to load a bundle, like in the Go SDK.

[shm12]

Hi. I would like to implement it :)
I was thinking about bundle loader function that will return LoadedPolicy object.
What do you think?
Is this way OK, or we want to create a new class of LoadedBundle that can give a loaded policy object (or eval things directly)?

[srenatus]

It's easiest to talk about a concrete PR. 👍 We can also discuss a draft, if you first want to figure out the API before dealing with tests, or something like that.