improvement: require name when generating migrations

lib/mix/tasks/ash_postgres.generate_migrations.ex

@@ -72,6 +72,18 @@ defmodule Mix.Tasks.AshPostgres.GenerateMigrations do
 
   @shortdoc "Generates migrations, and stores a snapshot of your resources"
   def run(args) do
+    {name, args} =
+      case args do
+        ["-" <> _ | _] ->
+          {nil, args}
+
+        [first | rest] ->
+          {first, rest}
+
+        [] ->
+          {nil, []}
+      end
+
     {opts, _} =
       OptionParser.parse!(args,
         strict: [
@@ -94,6 +106,18 @@ defmodule Mix.Tasks.AshPostgres.GenerateMigrations do
       opts
       |> Keyword.put(:format, !opts[:no_format])
       |> Keyword.delete(:no_format)
+      |> Keyword.put_new(:name, name)
+
+    if !opts[:name] && !opts[:dry_run] && !opts[:check] do
+      IO.warn("""
+      Name must be provided when generating migrations, unless `--dry-run` or `--check` is also provided.
+      Using an autogenerated name will be deprecated in a future release.
+
+      Please provide a name. for example:
+
+          mix ash_postgres.generate_migrations <name> #{Enum.join(args, " ")}
+      """)
+    end
 
     AshPostgres.MigrationGenerator.generate(apis, opts)
   end