Let gdal:convertformat convert all layers at once

[karatemuffin]

Problem

The gdal:convertformat(aka ogr2ogr.py) wrapper around ogr2ogr is only converting one layer of a source file at the moment.
e.g.
When setting the following options:

INPUT: https://download.geofabrik.de/europe/austria-latest.osm.pbf
OUTPUT: somefile.sqlite

they are translated to the following console command
ogr2ogr -f "SQLite" OUTPUT INPUT points
where points is describing the layer to convert, and the user isnt able to change that.

Changes

I added a Boolean Parameter to the Plugin that lets you convert all layers of a source file.
When active it eliminates the layerName being added at the end of the console command.
The default behavior to import only 1 automatically chosen layer has been kept.
Added also the Translation for the languages i speak.

[stale]

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[karatemuffin]

works as expected

[nyalldawson]

Manually marking as stale because stalebot has left for christmas break

[github-actions]

While we hate to see this happen, this PR has been automatically closed because it has not had any activity in the last 21 days. If this pull request should be reconsidered, please follow the guidelines in the previous comment and reopen this pull request. Or, if you have any further questions, just ask! We love to help, and if there's anything the QGIS project can do to help push this PR forward please let us know how we can assist.