Prepare test db in script; common extension list

[codecov[bot]]

Codecov Report

Merging #1125 (bdaecdb) into master (442a789) will decrease coverage by 1.10%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1125      +/-   ##
==========================================
- Coverage   67.80%   66.70%   -1.10%     
==========================================
  Files         117      116       -1     
  Lines        4696     4658      -38     
  Branches     1025     1013      -12     
==========================================
- Hits         3184     3107      -77     
- Misses       1402     1437      +35     
- Partials      110      114       +4     

Flag	Coverage Δ
backend	66.70% <100.00%> (-1.10%)	:arrow_down:

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Impacted Files	Coverage Δ
backend/prisma.ts	87.50% <ø> (ø)
backend/util/db-functions.ts	56.77% <100.00%> (+0.36%)	:arrow_up:
backend/middlewares/validate.ts	66.66% <0.00%> (-22.23%)	:arrow_down:
backend/bin/kafkaConsumer/common/userFunctions.ts	71.84% <0.00%> (-16.51%)	:arrow_down:
backend/graphql/Course/model.ts	86.02% <0.00%> (-12.91%)	:arrow_down:
backend/graphql/Completion/model.ts	36.70% <0.00%> (-5.07%)	:arrow_down:
backend/lib/errors.ts	50.57% <0.00%> (-3.45%)	:arrow_down:
...end/bin/kafkaConsumer/exerciseConsumer/saveToDB.ts

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