chore: Clean dependencies

[BobdenOs]

The goal of this PR is to remove as much dependencies as possible now that cds@8 provides the cds-test command.

• Removing jest by switching to cds-test
• Removed jest.config.js files
• Removing chai by switching to cds-test
• Adjust all tests to fit with the cds-test expect pattern
• Removing HANA test action
• Move HXE Github action steps into a reuse file
• Added a lock for HANA database creation
• Added a fallback for Postgres during database creation
• Removed compliance import tests
• Added symbolic link to the compliance test folder