Add optimizations to figures daily job

[Waleed-Mujahid]

Description

This PR is for the optimization of our daily job for updating figures populate_daily_metrics It takes around 11 hours to complete on prod.

This PR:

• Refactors the code to do bulk update and bulk create on figures_enrollmentdata This reduces queries that were executing on each enrollment separately.
• It moves update_learners_activity_for_date from inside a loop over courses to outside of the loop which is over sites. This function executes on site level and has no course specific processing. Executing this function for each course was redundant and was slowing down the figures job.

These changes have reduced the jobs time from around 11-13 minutes to 8 to 8.30 minutes. We should see better improvement on prod since it has much more data.

Ticket

https://projects.arbisoft.com/project/edly-product/task/7068

[Waleed-Mujahid]

This pull request has been split into two distinct parts for clarity and maintainability. The first part containing only the minimal changes needed to substantially improve the figures job will be merged to develop-koa in PR #132. Because this initial set of changes is both easier to review and less likely to introduce future maintenance challenges, we’ve isolated it here. If, after monitoring performance, we determine that additional optimizations are necessary, we will merge this pull request as well.

[Waleed-Mujahid]

Closing this PR, as the changes introduced in #132 significantly improved performance, reducing the job time from 11 hours to 4 hours.