[request] Merging multiple projects

[giancan]

Is your feature request related to a problem? Please describe.
It would be nice to have a feature to "append" a project to another. Say that I run MeshRoom on two sets of photographs in two separate projects (i.e. interior and exterior of a building, given that there is enough overlapping between the two parts, of course) and now I would like to merge the two sfm into a single one without re-processing the other project.

Describe the solution you'd like
I assume I could do it (not tested it yet, though) by linking the various folders of the second project into the first one, but it would be nice to have an automated system to minimize mistakes.

[natowi]

This is similar to #864
"I would like to merge the two sfm into a single one without re-processing the other project."
You could copy the sfm path from one project and use it in the other with the SfMAlignment node.