Add oban web, securities table and accounts table

priv/repo/migrations/20250127154056_add_securities_table.exs

@@ -0,0 +1,19 @@
+defmodule Tradex.Repo.Migrations.AddSecuritiesTable do
+  use Ecto.Migration
+
+  def change do
+    create table(:securities, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :name, :string, null: false
+      add :ticker, :string
+      add :wkn, :string
+      add :isin, :string
+      add :expiration_date, :date
+      add :strike_price, :decimal
+
+      timestamps(type: :utc_datetime)
+    end
+
+    create unique_index(:securities, [:name])
+  end
+end

priv/repo/migrations/20250127162154_add_accounts_table.exs

@@ -0,0 +1,15 @@
+defmodule Tradex.Repo.Migrations.AddAccountsTable do
+  use Ecto.Migration
+
+  def change do
+    create table(:accounts, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :name, :string, null: false
+
+      add :owner_id, references(:users, type: :binary_id), null: false
+      timestamps(type: :utc_datetime)
+    end
+
+    create index(:accounts, [:owner_id])
+  end
+end