Removes support for plio-analytics and BIGQUERY

[dalmia]

Fixes #309

Summary

• removed the list_uuid endpoint and instead updated the list endpoint to return a paginated list of plio details with each plio object also containing the items associated with that plio (this is because of the way duplicate is implemented - created an issue to fix that later) + number of unique views.
• removed support for BigQuery and making all queries directly on RDS
• added a new endpoint for computing metrics for a plio
• removed everything related to BigQuery and plio-analytics

Test Plan

• Wrote tests
• Tested locally
• Tested on staging
• Tested on production
• If adding or removing any environment variable:
  • update docs/ENV.md
  • update the environment variables for staging and production
• If changes in DB, update DB schema and BigQuery (staging and prod)

[pep8speaks]

Hello @dalmia! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2022-01-27 09:10:53 UTC

[codecov]

Codecov Report

Merging #310 (79d8d96) into master (b77fb30) will increase coverage by 0.37%.
The diff coverage is 100.00%.

❗ Current head 79d8d96 differs from pull request most recent head c6fa4f7. Consider uploading reports for the commit c6fa4f7 to get more accurate results

@@            Coverage Diff             @@
##           master     #310      +/-   ##
==========================================
+ Coverage   97.19%   97.57%   +0.37%     
==========================================
  Files         148      150       +2     
  Lines        2851     3007     +156     
==========================================
+ Hits         2771     2934     +163     
+ Misses         80       73       -7     

Impacted Files	Coverage Δ
organizations/middleware.py	100.00% <ø> (ø)
plio/ordering.py	95.45% <ø> (-1.10%)	⬇️
plio/settings.py	86.66% <ø> (-0.35%)	⬇️
plio/urls.py	100.00% <ø> (ø)
users/tests.py	100.00% <ø> (ø)
users/views.py	97.52% <ø> (+0.62%)	⬆️
plio/migrations/0029_auto_20220124_2224.py	100.00% <100.00%> (ø)
plio/migrations/0030_merge_20220125_0510.py	100.00% <100.00%> (ø)
plio/models.py	94.84% <100.00%> (+0.05%)	⬆️
plio/queries.py	100.00% <100.00%> (ø)
... and 3 more

---

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[deepansh96]

• You'll also remove all the instances related to the analytics service right? Auth0, cognito, ECR instances etc for both staging + production?
• I had this stuff configured in my .env file. These instances will also be shut down and deleted right?