Add Allocation % to Timecard CSVs / API

[sheelio]

For Tock data analysis, we'd like to figure out how many hours we're billing to each project. Most of our projects now use weekly allocation. The actual # of hours we bill is dependent on OOO time for that user for that timecard, so it's easiest to just use the % allocation so that we can then perform any downstream analysis we need.

There are a few places this information would be useful:

• Timecards Bulk download (ex. https://tock.18f.gov/reports/timecards_bulk.csv?after=2018-09-30)
• Timecards reduced fields (ex. https://tock.18f.gov/reports/slim_timecard_bulk.csv?after=2018-09-30)
• Timecards weekly (ex. https://tock.18f.gov/reports/2023-01-22.csv/)
• Timecard API (https://github.com/18F/tock/blob/main/api-docs/timecards.md)

Its probably easiest for me to use the Timecards Bulk endpoint (if we need to prioritize where we add it)

[carjug]

Note to whoever takes this on: this is a completely separate endpoint and part of the codebase than the UI csv downloads. Perhaps worth consolidating??? 🤔

[melchoyce]

Would this fall under the javascript label?

[sheelio]

For what its worth, it turns out that the Timecards API does have weekly allocation data (so this is slightly less important).

[annepetersen]

Given this ^, should this be prioritized any more? @kfoley-18F @abrouilette