fix(directory): add study table to staging template

[dtroelofsprins]

What are the main changes you did:

• Added studies table + studies column in Collections to the molgenis.csv of the biobank_directory staging template
• Included demo studies data

how to test:

• Goto the preview, create a new database using biobank_directory_staging template, including demo-data => check that the Studies table is there, including some demo data. Also the Collections table contains now a Studies column linked to the Studies table

todo:

• [nvt] updated docs in case of new feature
• added/updated tests
• [nvt] added/updated testplan to include a test for this fix, including ref to bug using # notation

[esthervanenckevort]

Ik kan een studie maken met als ID bmri-eric:... dus met maar één B. Er zit geen goede validatie op de IDs.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[esthervanenckevort]

Basis validatie werkt nu ook