Reorganize Oracle packages into database-scripts for unified git tracking

Move Oracle package files from docs/ to api/database-scripts/ with sequential numbering:
- PACK_COMENZI.pck → 04_pack_comenzi.pck (renamed with git)
- PACK_IMPORT_PARTENERI.pck → 05_pack_import_parteneri.pck
- PACK_IMPORT_COMENZI.pck → 06_pack_import_comenzi.pck

Remove 04_import_comenzi.sql (replaced by 06_pack_import_comenzi.pck actual version)

Update VFP integration files and project structure.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

vfp/gomag-comenzi.sql

@@ -0,0 +1,7 @@
+alter table COMENZI_ELEMENTE add ptva number(5,2);
+comment on column COMENZI_ELEMENTE.ptva is 'PROCENT TVA (11,21)';
+
+-- ARTICOLE_TERTI
+-- PACK_COMENZI
+-- PACK_IMPORT_PARTENERI
+-- PACK_IMPORT_COMENZI