Expose legacy GRPC client from common-sdk

[soerenbf]

Purpose

Re-expose legacy GRPC client, this time from @concordium/common-sdk.

I verified that this does not trigger requesting any WASM.

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.
• (If necessary) I have updated the CHANGELOG.

[shjortConcordium]

LGTM, doesn't seem to load the wasm. (Though it does increase the inject.ts size by 1.3mb 🤔)

[soerenbf]

LGTM, doesn't seem to load the wasm. (Though it does increase the inject.ts size by 1.3mb 🤔)

That is weird, did not notice this. Will have an additional look.

EDIT: Tried comparing the size of inject.js for:

• v1.3.0 tag (just some version which exported ConcordiumGRPCClient from the legacy UMD file) - 3.3mb
• expose-legacy-grpc-client branch: 600kb

So overall a good result compared to the old version. Of course it will not be comparable to the inject that did not really depend on the SDK except for types 😉

v1.3.0

expose-legacy-grpc-client

How did you get 1.3mb?

[shjortConcordium]

How did you get 1.3mb?

I think it's my bad, I just checked with build:dev. 🙃
(With prod it's 600kb vs 300kb (expose vs main))