Feature: load csv from string without tmp file

[4n70w4]

This is:

- [ ] a bug report
- [x] a feature request
- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpspreadsheet or https://gitter.im/PHPOffice/PhpSpreadsheet)

What is the expected behavior?

Read CSV from string variable instead file.

What is the current behavior?

There is no possibility to read from the string variable.

Which versions of PhpSpreadsheet and PHP are affected?

1.10.1

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.
If this is still an issue for you, please try to help by debugging it further and sharing your results.
Thank you for your contributions.

[Adri74100]

That would be a good thing !