Make import command resumabe

[mkilmanas]

Pull Request

Make it possible to resume import from a mid-point after unsuccessful previous import

Related issue

Fixes #241

What does this PR do?

• Makes import resumable:
  • Introduce --skip-batches parameter
  • Enforce entity sorting by primary key (consistent, fast)
  • Display the number of processed entities
  • Add test case
• Other small improvements:
  • Clarify wording of the message telling the number of indexed records
• Update existing tests for modified messages

PR checklist

Please check if your PR fulfills the following requirements:

• Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• Have you read the contributing guidelines?
• Have you made sure that the title is accurate and descriptive of the changes?

[brunoocasali]

@mkilmanas thanks for your contribution. I didn't find anything that could be improved!

So I'll merge it and release a new version since according to your issue you're having problems in production!

[brunoocasali]

bors merge

[bors]

Build succeeded:

• Code style
• integration-tests (PHP 7.4) (Symfony 5.4.*)
• integration-tests (PHP 8.0) (Symfony 6.0.*)
• integration-tests (PHP 8.1) (Symfony 6.1.*)
• integration-tests (PHP 8.2) (Symfony 6.2.*)