First line indentation support

[grantting]

Checklist

Please replace the space inside the brackets with an x if the following items apply:

• [x ] I've verified that I use the latest version of the add-on by redownloading it from AnkiWeb
• [x ] I've verified that I use the latest version of Anki by checking at https://apps.ankiweb.net#download
• [x ] I've checked if anyone else suggested this feature before by looking through the issue reports.

Problem case

Is your feature request related to a problem? If so, please describe it here. E.g.: "My workflow is such and such, and this and that would help."

Adding first line indentation to a multi-paragraph article in bulk is a sure way to increase readability.

Solution

Concisely describe the solution you would like

Concisely describe alternatives you've considered (if any)

More information

Additional context: Add any other context or screenshots about the feature request here.