evaluate_range: evaluate regression ranges
In KopfLab/isoprocessorCUB: IRMS data processor

evaluate regression ranges

evaluate_range(
  dt,
  ...,
  nested_model = FALSE,
  model_data = model_data,
  model_params = model_params,
  in_reg = in_reg,
  model_range = model_range,
  in_range = in_range
)

`dt`	data table
`...`	which terms to evaluate the range for. Can be individual columns or more complex numeric expressions. All must be valid within the scope of the model_data and only numeric values are currently evaluated.
`nested_model`	whether the model is nested, if TRUE, must also provide `model_params`
`model_data`	the nested model data column
`model_params`	the nested model information (only relevant if `nest_model = TRUE`)
`in_reg`	name of the new logical column in the nested model_data that flags the data included in the regression (i.e. the data that fullfills the `model_filter_condition` if provided)
`model_range`	new column recording the range of all terms for each model and model_data combination.
`in_range`	new column in the model_data that holds whether a data entry is within the model_range. Checks whether all terms are within the model_range and records a textual summary of the result in this new column.