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Introduce Chebyshev polynomial basis

Thekke Veettil, Sachin Krishnan (FWU) - 142348 requested to merge dev-79 into dev

Resolves #79 (closed)

Introduces the Chebyshev Polynomial basis class based on the MultivariatePolynomialABC with the following features:

  • Evaluation in Chebyshev basis
  • Transformation operator from Lagrange to Chebyshev
  • Transformation operator from Chebyshev to Lagrange

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