Fix: Multiple Init script fixes and some other Postgres fixes

[peaklabs-dev]

Changes

• Fix: When having multiple Postgres init scripts, saving a change to one init script would delete all other init scripts.
• Fix: Changing the file name of an existing init script would create a new init script instead of renaming the file.
• Fix: Some index issue with the json in the DB when updating init scripts.
• Fix: When deleting an init script, the array has formatting problems as it is not reindexed.
• Fix: Deleting an init script does not remove it form the server.
• Fix: When renaming an init script, the old init script (old name) is still on the server, which can lead to conflicts -> Now the init script is loaded fresh from the Coolify database on each deploy (folder is emptied first)
• Fix: When renaming an init script the old script is now deleted from the server
• Fix: Remove custom-postgres.conf if input is empty or null as the file is not needed on the server anymore

Issues

• fix [Bug]: Saving changes to database initialization script deletes the other initialization scripts #3273

[andrasbacsai]

Thank you for the PR!