chore: add regen_migrations script and seed-database to Justfile

regen_migrations.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Get count of untracked migrations
+N_MIGRATIONS=$(git ls-files --others priv/repo/migrations | wc -l)
+
+# Rollback untracked migrations
+mix ash_postgres.rollback -n $N_MIGRATIONS
+
+# Delete untracked migrations and snapshots
+git ls-files --others priv/repo/migrations | xargs rm
+git ls-files --others priv/resource_snapshots | xargs rm
+
+# Regenerate migrations
+mix ash.codegen --name $1
+
+# Run migrations if flag
+if echo $* | grep -e "-m" -q; then
+        mix ash.migrate
+fi