API method to transfer arrays to the MAPDL instance

[germa89]

Current status

The way to transfer an array to the MAPDL instance requires to write a txt file and make MAPDL read it. This is encoded in the function:
https://github.com/pyansys/pymapdl/blob/f6bff6456959b8a7c2dd6e313749e7ebcccfc43e/src/ansys/mapdl/core/parameters.py#L393

Desired solution

There should be a way to transfer arrays without having to write a file. A gRPC method should be implemented as part of the API.

Notes

• Mentioned in Pass a vector as MAPDL solution #1032