feat: merge the swagger files manually instead use nodetime swagger-combine (backport #4077)

[mergify]

Description

This PR changes the package swagger-combine to merge all swagger files into the code instead of using the NodeJs pkg swagger-combine inside the nodetime binary.

How to test

• Scaffold and run a chain:

ignite s chain venus && cd venus && \
ignite s list --yes user email && \
ignite c serve

• Check the swagger files at http://0.0.0.0:1317

  ---

  This is an automatic backport of pull request feat: merge the swagger files manually instead use nodetime swagger-combine #4077 done by Mergify.

[mergify]

Cherry-pick of 6de2f33 has failed:

On branch mergify/bp/release/v28.x.y/pr-4077
Your branch is up to date with 'origin/release/v28.x.y'.

You are currently cherry-picking commit 6de2f338.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   changelog.md
	new file:   ignite/pkg/swagger-combine/swagger-combine.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   go.mod
	both modified:   go.sum
	both modified:   ignite/pkg/cosmosgen/generate_openapi.go
	deleted by them: ignite/pkg/nodetime/programs/swagger-combine/swagger-combine.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[github-actions]

Visit the preview URL for this PR (updated for commit c8f5ab3):

https://igntservices-docs--pr4225-mergify-bp-release-v-t284sgfz.web.app

_{(expires Wed, 17 Jul 2024 00:55:39 GMT)}

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[julienrbrt]

tACK! It even fixes a bug in v28 💪🏾