Resolve "Enable DFTB Ehrenfest dynamics in dftbplus system"
Description
Enable TD-DFTB Ehrenfest electron-ion dynamics using DFTB+ as a library, parsing and setting the external field from Octopus at each time step.
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.
Closes #436 (closed)
Edited by Franco Bonafé