Emit commit details on contract instantiation

[Thomasvdam]

Motivation

This should make it easier to figure out 'where' a contract was built from.

Explanation of Changes

I emitted it during the instantiation so we don't have to allocate extra state storage for it, but that does mean we can only see the details in the tx/endblock where the contract was actually instantiated.

It would probably be better to only embed this info for debug builds, and if we do that we can probably keep it in state and retrieve it with a query. That's beyond my Rust capabilities though. Also didn't want to spend too much time on this in case we decide it's not useful. :)

Sources used to figure out how to achieve this:
rust-lang/rust-analyzer#13751
https://github.com/near/nearcore/blob/master/neard/build.rs

Testing

Deployed and instantiated on devnet: https://sedaprotocol.github.io/test-explorer/devnet/tx/ACF61782B4F718A70BC8A178748264D21579A89A5C43800DA3385CE9F443C651

Check the tx_response.events[type=wasm].attributes[key=git_revision] in the JSON view.

Related PRs and Issues

None.

[gluax]

Do we want a query method to check the version as well or is that overkill?

[hacheigriega]

Do we want a query method to check the version as well or is that overkill?

We can do a raw query of the contract state, right?

[Thomasvdam]

For that we would have to store it in the state. We can add that but it felt a little overkill for a debugging tool. Maybe with the config feature flag stuff we can only include it on dev builds?

[hacheigriega]

My bad - I commented without reading the code first. I agree this is enough at least for now.

[gluax]

I can add something that is for devnet only. When I look into #182.