[bin] meshroom_batch: support multiple init nodes

[mugulmd]

Description

Modify meshroom_batch command line to support pipelines with multiple init nodes, such as the cameraTracking pipeline.

The --input and --inputRecursive arguments syntax used to be input1 input2 input3 ... (each input being either an image, a folder or a SfMData file), now it is NodeAName:input1;input2;input3 NodeBName:input4.

For example with a cameraTracking pipeline where the shot to track is in a folder named /path/to/my/shot and the distortion grid is just one image named distogrid.exr the command line would be:

meshroom_batch -i CameraInit_1:/path/to/my/shot CameraInit_2:distogrid.exr -p cameraTracking

When the pipeline used has only one init node (most common use case) there is no need to specify the NodeName: part:

meshroom_batch -i /some/images;/more/images -p photogrammetry

Note

The --scale argument has been removed since it was redundant.