Foldertreelibrary

[mellbergsimon]

DRAFT to fix first release of folder library.

Description

Quick draft to review changes to branch since it was so long ago I worked on this. I will update PR description before merge.

Fixes #(issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

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Test Configuration:

• Firmware version:
• Hardware: Caspar 2.5
• Toolchain:
• SDK:

Checklist:

• I confirm that I wrote and/or have the right to submit the contents of my PR, by agreeing to the Developer Certificate of Origin (see https://github.com/svt/open-source-project-template/blob/master/docs/CONTRIBUTING.adoc[docs/CONTRIBUTING]).
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• PR has an informative and human-readable title
• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)