Missing foreign key constraints on borehole_files composite primary keys

[flenny]

As mentionend in #1044 there are a bunch of outdated records in the _boreholefiles and files table due to missing foreign key constraints.

• [x] Delete obsolete records in _boreholefiles and files. (manually on all environments). ⚠️ This needs to be done first. Otherwise the db migration will fail.
• [x] Add missing foreign key constraints on _boreholefiles for all composite primary keys (db migration)

-- Entries in borehole_files with missing boreholes or files
SELECT * FROM bdms.borehole_files
WHERE
  id_fil_fk NOT IN (SELECT id_fil FROM bdms.files) OR
  id_bho_fk NOT IN (SELECT id_bho FROM bdms.borehole)

-- Obsolete files which can be deleted
SELECT * FROM bdms.files
WHERE id_fil NOT IN (SELECT id_fil_fk FROM bdms.borehole_files)

[flenny]

SQL statement to use to delete outdated borehole_files records.

DELETE FROM bdms.borehole_files
WHERE (id_fil_fk, id_bho_fk) IN (
    SELECT id_fil_fk, id_bho_fk FROM bdms.borehole_files
    WHERE
      id_fil_fk NOT IN (SELECT id_fil FROM bdms.files) OR
      id_bho_fk NOT IN (SELECT id_bho FROM bdms.borehole))

Executed on... DEV 202406240915 INT 202406251323 PROD 202406271254