Anchor debt is sensitive to price drops, but only in the short run!

This is my solution for the Anchor Repayments challenge. One of the biggest challenges here was coming up with an "outstanding debt" number that was consistent with the actual Anchor dashboard. I found that the discrepancies were quite small before the May 2021 crash, but it become a lot worse after. This makes me suspect that the difference is due to how liquidation repayments are recorded on the `msgs` table. Despite the above, I did find that the general direction of the trend even post May 2021, are quite consistent with the official Anchor dashboard so I do believe that we can still derive accurate insights from this.