Missing requirements for MPB D.08.2

[ftessier]

There are no requirements specified in MPB D.08.2 on High-Energy Electron Beam Dosimetry. The brackground section also seems like a stub and ought to be expanded.

https://github.com/ftessier/cirms/blob/ebac0a5c2c1bcb89b33930615b0accb9bb6c3684/needs-report/metrology-needs/industrial-material/D.08.2-dosimetry-ebeam-high-energy.md?plain=1#L20-L25