Make wasm hooks importable

[nicolaslara]

This is a draft PR for experimenting with making wasm hooks importable.

I had to copy a few functions from osmoutils, which makes me think we should consider also making osmoutils its own package.

As an alternative, we could use workspaces (https://go.dev/blog/get-familiar-with-workspaces) to avoid having to deal with the scattered go.mod/sum files.

[ValarDragon]

Can we make a separate PR for just moving the test folder, and get that merged in first?

[nicolaslara]

Can we make a separate PR for just moving the test folder, and get that merged in first?

Done: #3803

[nicolaslara]

For reference, this is how to get the version string if we want to avoid the replaces:

TZ=UTC git --no-pager show \
  --quiet \
  --abbrev=12 \
  --date='format-local:%Y%m%d%H%M%S' \
  --format="%cd-%h"

[nicolaslara]

There are too many conflicts here. Closing in favor of #3850