upkeep: complete deprecation of ald

[jdhoffa]

See this brief blog post explaining the decision: https://2degreesinvesting.github.io/posts/2022-03-02-ald-becomes-abcd/

In r2dii.match, the key changes in the API will be:

• The function argument match_name(..., ald) -> match_name(..., abcd)
• The output of match_name contains added columns name_ald, sector_ald, these will become name_abcd, sector_abcd
• The input of prioritize() expects a datasets with columns name_ald and sector_ald, we will need to make it flexible to take two different kinds of input (name_abcd, sector_abcd)

In documentation:

• All references to ald_demo should now reference abcd_demo (must wait for this PR to be merged and pushed to CRAN).

AB#10183