enable go.work in root of the repo

[miladz68]

Description

This PR adds go.work and go.work.sum to the root of the repository.

Reviewers checklist:

• Try to write more meaningful comments with clear actions to be taken.
• Nit-picking should be unblocking. Focus on core issues.

Authors checklist

• Provide a concise and meaningful description
• Review the code yourself first, before making the PR.
• Annotate your PR in places that require explanation.
• Think and try to split the PR to smaller PR if it is big.

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This change is 

[dzmitryhil]

CI tests are failed

Reviewable status: 0 of 19 files reviewed, all discussions resolved (waiting on @wojtek-coreum and @ysv)

[dzmitryhil]

Reviewed 19 of 19 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @wojtek-coreum and @ysv)

[wojtek-coreum]

Reviewed 19 of 19 files at r1, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @miladz68 and @ysv)

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integration-tests/go.mod line 32 at r1 (raw file):

)

require github.com/coinbase/rosetta-sdk-go/types v1.0.0 // indirect

minor: merge it into the block below

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relayer/go.mod line 38 at r1 (raw file):

)

require github.com/coinbase/rosetta-sdk-go/types v1.0.0 // indirect

minor: same thing

[wojtek-coreum]

Reviewed 4 of 4 files at r2, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @miladz68 and @ysv)

[wojtek-coreum]

Reviewed 5 of 5 files at r3, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @miladz68 and @ysv)

[wojtek-coreum]

Reviewed 2 of 2 files at r4, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @ysv)

[wojtek-coreum]

Reviewed 2 of 2 files at r5, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @ysv)

[dzmitryhil]

Reviewed 1 of 4 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @ysv)