grouped_by now refers to names in "co2"

[maurolepore]

Relates to #566

This PR makes a change necessary to export emissions_profile_any_add_values_to_categorize() as a pre-processing helper (#596).

The values of grouped_by are now more transparent and less surprising (see related principle) (#601). They now simply refer to the full name of the corresponding columns in
the "co2" dataset (products or inputs) passed to the emissions_profile*()
functions. For example, passing a column products$tilt_sector now yields the
value "tilt_sector" in group_by -- which before was obscurely renamed to "tilt_sec".

BEFORE

devtools::load_all()
#> ℹ Loading tiltIndicator
packageVersion("tiltIndicator")
#> [1] '0.0.0.9094'

products <- example_products()
products
#> # A tibble: 1 × 5
#>   activity_uuid_product_uuid tilt_sector unit  isic_4digit co2_footprint
#>   <chr>                      <chr>       <chr> <chr>       <chr>        
#> 1 a                          a           a     1234        1

products |> emissions_profile_any_add_values_to_categorize()
#> Error in `map()`:
#> ℹ In index: 2.
#> ℹ With name: isic_sec.
#> Caused by error in `all_of()`:
#> ! Can't subset columns that don't exist.
#> ✖ Column `isic_sec` doesn't exist.

^{Created on 2023-11-12 with reprex v2.0.2}

NOW

devtools::load_all()
#> ℹ Loading tiltIndicator
packageVersion("tiltIndicator")
#> [1] '0.0.0.9095'

products <- example_products()
products
#> # A tibble: 1 × 5
#>   activity_uuid_product_uuid tilt_sector unit  isic_4digit co2_footprint
#>   <chr>                      <chr>       <chr> <chr>       <chr>        
#> 1 a                          a           a     1234        1

products |> emissions_profile_any_add_values_to_categorize()
#> # A tibble: 6 × 7
#>   grouped_by  activity_uuid_produc…¹ tilt_sector unit  isic_4digit co2_footprint
#>   <chr>       <chr>                  <chr>       <chr> <chr>       <chr>        
#> 1 all         a                      a           a     1234        1            
#> 2 isic_4digit a                      a           a     1234        1            
#> 3 tilt_sector a                      a           a     1234        1            
#> 4 unit        a                      a           a     1234        1            
#> 5 unit_isic_… a                      a           a     1234        1            
#> 6 unit_tilt_… a                      a           a     1234        1            
#> # ℹ abbreviated name: ¹​activity_uuid_product_uuid
#> # ℹ 1 more variable: values_to_categorize <dbl>

^{Created on 2023-11-12 with reprex v2.0.2}

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