Add parameter to ignore cpu_model and to change default CPU power draw value

[skrakau]

I added two parameters

• ignoreCpuModel: to ignore the retrieved cpu_model name and use the default CPU power draw value
• powerdrawCpuDefault: to change the default power draw value of a computing core. Used in combination with ignoreCpuModel or for tasks where no TDP value could be retrieved for the cpu_model (either because this is null or because there is no entry for the cpu_model)

Additionally, i removed the cpu_model column from the TXT report if ignoreCpuModel is set, since this would be misleading. If the cpu_model was not found in the TDP data and the default power draw value is used instead, the cpu_model column is kept (would be task specific). In this case, anyway a warning is given out already.

Probably it would make sense, if ignoreCpuModel is set, to remove the cpu_model column from the table in the HTML report as well. @mirpedrol what do you think and is this something you could add?

Addresses https://github.com/nextflow-io/nf-co2footprint/issues/58

[mirpedrol]

cpu_model values appear as empty (-) in the report if ignoreCpuModel is used