[NEW] add version 19.0 migration files

versions/19.0/known_changes.yaml

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+# Modules that became obsolete in version 19.0
+obsolete: []
+
+# Modules merged into Odoo Core in version 19.0
+merged_in_core: []
+
+# Modules renamed in version 19.0
+renamed: []

versions/19.0/post_upgrade.sh

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+#!/bin/bash
+set -euo pipefail
+
+echo "Post migration to 19.0..."
+
+
+echo "Post migration to 19.0 completed!"

versions/19.0/pre_upgrade.sh

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+#!/bin/bash
+set -euo pipefail
+
+echo "Prepare migration to 19.0..."
+
+# Copy database
+copy_database ou18 ou19 ou19 || exit 1
+
+
+# Execute SQL pre-migration commands
+PRE_MIGRATE_SQL=$(cat <<'EOF'
+EOF
+)
+echo "SQL command = $PRE_MIGRATE_SQL"
+query_postgres_container "$PRE_MIGRATE_SQL" ou19 || exit 1
+
+# Copy filestores
+copy_filestore ou18 ou18 ou19 ou19 || exit 1
+
+echo "Ready for migration to 19.0!"

versions/19.0/upgrade.sh

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+#!/bin/bash
+set -euo pipefail
+
+# --upgrade-path lists BOTH our custom migration scripts and OpenUpgrade's
+# native ones. Passing --upgrade-path overrides config['upgrade_path'], and
+# openupgrade_framework only sets that default when it is empty; so we must
+# include the native openupgrade_scripts/scripts path explicitly, otherwise the
+# native migration scripts would no longer run. Odoo appends every listed path
+# to odoo.upgrade.__path__ and concatenates (does not override) the scripts
+# found per module/version, so our script runs IN ADDITION to the native ones.
+run_compose run -p 8019:8069 ou19 --config=/opt/odoo/auto/odoo.conf --stop-after-init -u all --workers 0 --log-level=debug --max-cron-threads=0 --limit-time-real=10000 --database=ou19 --load=base,web,openupgrade_framework --addons-path=/opt/odoo/auto/mig,/opt/odoo/auto/addons --upgrade-path=/opt/odoo/auto/upgrade,/opt/odoo/auto/addons/openupgrade_scripts/scripts