Add new task composer plugin factory constructor

[marip8]

This PR adds another constructor and loadConfig method to the task composer plugin factory to configure it with a tesseract_common::TaskComposerPluginInfo struct. This makes it easier to programmatically configure a plugin loader (e.g., from a GUI representation of a task composer graph/task)

[marip8]

Not sure what happened to the taskflow library on Focal; the stable job fails because it can't install taskflow

[Levi-Armstrong]

Can you add a unit test which covers the new code?

[Levi-Armstrong]

Not sure what happened to the taskflow library on Focal; the stable job fails because it can't install taskflow

It should get it from here: https://launchpad.net/~ros-industrial/+archive/ubuntu/ppa/+packages

[Levi-Armstrong]

Actually it can also get it from ros: https://repositories.ros.org/status_page/ros_noetic_default.html?q=taskflow

[Levi-Armstrong]

@marip8 It looks like something might have changed with github CI because the the add_source.sh which adds the ppa to allow installing taskflow is failing.

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2023-08-28T13:08:14.4620689Z The following additional packages will be installed:
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2023-08-28T13:08:14.4632626Z 65 packages can be upgraded. Run 'apt list --upgradable' to see them.
2023-08-28T13:08:14.4633703Z ##[endgroup]
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[Levi-Armstrong]

I pushed a commit which I think fixed the CI build. The only thing left is unit tests before this can be merged.

[Levi-Armstrong]

Pending that the pipeline passes