[Draft/Discussion] Recursive parameter interface

[henningkayser]

@tylerjw here is a draft interface that could combine the parameter tree as implemented in ros2_params with the new NodeParameters interface. To me the only hurdle would be how callbacks would actually be handled in the parameter tree, or if we would only allow callbacks for top-level parameters and for the leafs (= node parameters).

[tylerjw]

@henningkayser I made some small edits here: https://github.com/henningkayser/rosparam_shortcuts/pull/1

[codecov[bot]]

Codecov Report

Merging #17 (af64edd) into ros2 (2c8412c) will not change coverage. The diff coverage is n/a.

:exclamation: Current head af64edd differs from pull request most recent head 1daaab6. Consider uploading reports for the commit 1daaab6 to get more accurate results

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