Add some missing constructors to CompositeBasisNode to allow for CTAD

Simon Praetoriusrequested to merge
issue/composite-basis-node-constructors into master

The CompositeBasisNode must inherit from Dune::TypeTree::CompositeNode. In my opinion, it should also bring in all constructors. This MR adds a variadic constructor that allows for class-template-argument deduction.

Changes

  • Add new constructor that takes a variadic list of arguments by const& corresponding to the child node types,
  • Make the variadic constructors explicit.

ToDo

  • Add a test
Edited by Simon Praetorius

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