Add FPGA kernels into FPGA DataPrep pipeline

This MR brings in the pixel clustering and spacepoint FPGA kernels into the DataPreparation pipeline, reflecting the objectives listed in JIRA EFTRACK-618.

This package is a standalone WIP and this MR will not affect production and validation workflow.

Tagging: @acamplan @psundara @jdittmei @sabidi @yuchou