🧹 remove taskflow closes #2008

[prudhomm]

• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes?
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• Have you written Doxygen comments in your contribution ?

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• closes 🧹 remove taskflow #2008
• start work on add support for specx add support for specx #2009

Taskflow is superseded by specx developed by @berenger-eu

[skip components]