chore: readmes + upgrading docs (backport #21271)

[mergify]

Description

Prepares readme + upgrading.md for alpha

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• included the necessary unit and integration tests

• added a changelog entry to CHANGELOG.md

• updated the relevant documentation or specification, including comments for documenting Go code

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Summary by CodeRabbit

• New Features

  • Enhanced ability to overwrite configuration settings.
  • Introduced a new query command for backward compatibility.
  • Added a new helper method for broadcasting test transactions.
  • Improved features in the collections module.

• Bug Fixes

  • Improved error handling during initialization and transaction processing.
  • Refined handling of gas fees to prevent potential issues.

• Documentation

  • Updated documentation for clearer module dependencies and compatibility information.
  • Added migration instructions for transitioning to the latest version.
  • Enhanced clarity in tool documentation regarding usage and compatibility.

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This is an automatic backport of pull request #21271 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of 858ec2f has failed:

On branch mergify/bp/release/v0.52.x/pr-21271
Your branch is up to date with 'origin/release/v0.52.x'.

You are currently cherry-picking commit 858ec2fcb.
  (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:   README.md
	modified:   tools/confix/CHANGELOG.md
	modified:   tools/confix/README.md

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   CHANGELOG.md
	both modified:   UPGRADING.md
	deleted by us:   collections/CHANGELOG.md

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

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