feat(services): add faucet fee config (backport #4513)

[mergify]

Allow to specify fee to be paid by the faucet in the config.
An user on discord had the issue that when the chains is requiring the fee, the faucet will fail.
This was already supported, but we didn't have a field to pass in the config for it.

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This is an automatic backport of pull request #4513 done by Mergify.

[mergify]

Cherry-pick of 4abea76 has failed:

On branch mergify/bp/release/v28.x.y/pr-4513
Your branch is up to date with 'origin/release/v28.x.y'.

You are currently cherry-picking commit 4abea764.
  (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:   .github/workflows/test-cov.yml
	modified:   .github/workflows/test-integration.yml
	modified:   .github/workflows/test.yml
	modified:   changelog.md
	modified:   ignite/services/chain/faucet.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   ignite/config/chain/base/config.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