Extract data processing, cleaning and renaming

[Clare2D]

As we update the data used by the tool, there are more and more challenges to ensure we've got the correct data sets, in the right file format and that they are pushed to Git. Part of this cleaning takes place here https://github.com/2DegreesInvesting/PACTA_analysis/blob/f4ba7c8083466545d5772e145c6514f81830acb9/web_tool_script_1.R#L33
however this could be extracted to a separate supporting script that is only run whenever updating the data and not included as an option in the code

To do:

• create a new "clean_data" script including these functions
• include tests to ensure that files have the correct contents (names and col types)
• rename and extract the peers and index files and save to the correct location
• save files as fst and ensure < 100MB so they can be pushed through pacta-data to git (inc ald_raw and ald_scen in web_script_2)
• check all file encoding is correct.

Other tasks @jacobvjk

[cjyetman]

just fyi... according to some experimentation I did here 2DegreesInvesting/pacta-data/issues/4#issuecomment-713395008, using FST may not give the file size improvements we need to achieve one of the goals here

[cjyetman]

#247 is intended to address this issue, but it's been put on pause for now

[cjyetman]

closing because this mostly unnecessary anymore