Fix API scripts

[YuryShkoda]

Issue

• cp command is not supported by Windows Command Prompt (cmd.exe).
• npm reported vulnerability in jsonwebtoken.

Intent

• Improve api scripts to make it work in all shells.
• Fix vulnerable dependency.

Implementation

• Used cpr package to copy folders within api scripts.
• Bumped version of jsonwebtoken.
• Regenerated swagger.yaml.

Checks

• [x] Code is formatted correctly (npm run lint:fix).
• [ ] Any new functionality has been unit tested.
• [ ] All unit tests are passing (npm test).
• [ ] All CI checks are green.
• [ ] Reviewer is assigned.

[YuryShkoda]

Unit tests covering api are failing due to #367 issue.