Added migrations, each creating a new database table

priv/repo/migrations/20250724224338_create_posts.exs

@@ -0,0 +1,23 @@
+defmodule Sukaato.Repo.Migrations.CreatePosts do
+  use Ecto.Migration
+
+  def change do
+    create table(:posts) do
+      add :title, :string
+      add :abst, :text
+      add :slug, :string
+      add :content, :text
+      add :tags, {:array, :string}
+      add :cat, :string
+      add :ledit, :utc_datetime
+      add :auth_id, references(:users, on_delete: :nothing)
+      add :rev_id, references(:users, on_delete: :nothing)
+
+      timestamps(type: :utc_datetime)
+    end
+
+    create unique_index(:posts, [:title])
+    create index(:posts, [:auth_id])
+    create index(:posts, [:rev_id])
+  end
+end