add quilljs, create channel for syncing documents

priv/repo/migrations/20231114025400_create_pad_documents.exs

@@ -0,0 +1,13 @@
+defmodule Poex.Repo.Migrations.CreatePadDocuments do
+  use Ecto.Migration
+
+  def change do
+    create table(:pad_documents, primary_key: false) do
+      add :id, :uuid, primary_key: true, null: false
+      add :title, :string
+      add :state, :map, default: "{}"
+
+      timestamps(type: :utc_datetime)
+    end
+  end
+end

priv/repo/migrations/20231124191833_create_operations.exs

@@ -0,0 +1,17 @@
+defmodule Poex.Repo.Migrations.CreateOperations do
+  use Ecto.Migration
+
+  def change do
+    create table(:operations, primary_key: false) do
+      add :id, :uuid, primary_key: true, null: false
+      add :type, :string
+      add :value, :map
+      add :attributes, :map
+      add :document_id, references(:pad_documents, type: :uuid)
+
+      timestamps()
+    end
+
+    create index(:operations, [:document_id])
+  end
+end